The difference between Pin and Tack
When used as nouns, pin means a sewing pin or ballhead pin: a needle without an eye (usually) made of drawn-out steel wire with one end sharpened and the other flattened or rounded into a head, used for fastening, whereas tack means a small nail with a flat head.
When used as verbs, pin means to fasten or attach (something) with a pin, whereas tack means to nail with a tack (small nail with a flat head).
check bellow for the other definitions of Pin and Tack
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Pin as a noun:
A sewing pin or ballhead pin: a needle without an eye (usually) made of drawn-out steel wire with one end sharpened and the other flattened or rounded into a head, used for fastening.
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Pin as a noun:
A small nail with a head and a sharp point.
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Pin as a noun:
A cylinder often of wood or metal used to fasten or as a bearing between two parts.
Examples:
"Pull the pin out of the grenade before throwing it at the enemy."
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Pin as a noun (wrestling):
The victory condition of holding the opponent's shoulders on the wrestling mat for a prescribed period of time.
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Pin as a noun:
A slender object specially designed for use in a specific game or sport, such as skittles or bowling.
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Pin as a noun (informal, in plural):
A leg.
Examples:
"I'm not so good on my pins these days."
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Pin as a noun (electricity):
Any of the individual connecting elements of a multipole electrical connector.
Examples:
"The UK standard connector for domestic mains electricity has three pins."
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Pin as a noun:
A piece of jewellery that is attached to clothing with a pin.
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Pin as a noun (US):
A simple accessory that can be attached to clothing with a pin or fastener, often round and bearing a design, logo or message, and used for decoration, identification or to show political affiliation, etc.
Examples:
"synonyms: badge lapel pin"
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Pin as a noun (chess):
A scenario in which moving a lesser piece to escape from attack would expose a more valuable piece to attack.
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Pin as a noun (golf):
The flagstick: the flag-bearing pole which marks the location of a hole
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Pin as a noun (curling):
The spot at the exact centre of the house (the target area)
Examples:
"The shot landed right on the pin."
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Pin as a noun (dated):
A mood, a state of being.
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Pin as a noun:
One of a row of pegs in the side of an ancient drinking cup to mark how much each person should drink.
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Pin as a noun (medicine, obsolete):
caligo
Examples:
"rfquotek Shakespeare"
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Pin as a noun:
A thing of small value; a trifle.
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Pin as a noun:
A peg in musical instruments for increasing or relaxing the tension of the strings.
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Pin as a noun (engineering):
A short shaft, sometimes forming a bolt, a part of which serves as a journal.
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Pin as a noun:
The tenon of a dovetail joint.
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Pin as a noun (UK, brewing):
A size of brewery cask, equal to half a firkin, or eighth of a barrel.
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Pin as a noun (informal):
A pinball machine.
Examples:
"I spent most of my time in the arcade playing pins."
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Pin as a verb (often followed by a preposition such as "to" or "on"):
To fasten or attach (something) with a pin.
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Pin as a verb (chess, usually, in the passive):
To cause (a piece) to be in a pin.
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Pin as a verb (wrestling):
To pin down (someone).
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Pin as a verb:
To enclose; to confine; to pen; to pound.
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Pin as a verb (computing, GUI, transitive):
To attach (an icon, application, etc.) to another item.
Examples:
"to pin a window to the Taskbar"
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Pin as a verb (computing, transitive):
To fix (an array in memory, a security certificate, etc.) so that it cannot be modified.
Examples:
"When marshaling data, the interop marshaler can copy or pin the data being marshaled."
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Pin as a verb:
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Tack as a noun:
A small nail with a flat head.
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Tack as a noun:
A thumbtack.
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Tack as a noun (sewing):
A loose seam used to temporarily fasten pieces of cloth.
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Tack as a noun (nautical):
The lower corner on the leading edge of a sail relative to the direction of the wind.
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Tack as a noun (nautical):
A course or heading that enables a sailing vessel to head upwind. See also reach, gybe.
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Tack as a noun:
A direction or course of action, especially a new one.
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Tack as a noun (nautical):
The maneuver by which a sailing vessel turns its bow through the wind so that the wind changes from one side to the other.
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Tack as a noun (nautical):
The distance a sailing vessel runs between these maneuvers when working to windward; a board.
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Tack as a noun (nautical):
A rope used to hold in place the foremost lower corners of the courses when the vessel is close-hauled; also, a rope employed to pull the lower corner of a studding sail to the boom.
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Tack as a noun:
Any of the various equipment and accessories worn by horses in the course of their use as domesticated animals. Saddles, stirrups, bridles, halters, reins, bits, harnesses, martingales, and breastplates are all forms of horse tack.
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Tack as a noun (manufacturing, construction, chemistry):
The stickiness of a compound, related to its cohesive and adhesive properties.
Examples:
"The laminate adhesive has very aggressive tack and is hard to move once in place."
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Tack as a noun:
Hardtack.
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Tack as a noun:
That which is attached; a supplement; an appendix.
Examples:
"rfquotek Macaulay"
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Tack as a noun (legal, Scotland):
A contract by which the use of a thing is set, or let, for hire; a lease.
Examples:
"rfquotek Burrill"
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Tack as a noun (obsolete):
Confidence; reliance.
Examples:
"rfquotek Halliwell"
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Tack as a verb:
To nail with a tack (small nail with a flat head).
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Tack as a verb:
To sew/stich with a tack (loose seam used to temporarily fasten pieces of cloth).
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Tack as a verb (nautical):
To maneuver a sailing vessel so that its bow turns through the wind, i.e. the wind changes from one side of the vessel to the other.
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Tack as a verb:
To add something as an extra item.
Examples:
"to tack (something) onto (something)"
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Tack as a verb:
Often paired with "up", to place the tack on a horse.
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Tack as a noun:
A stain; a tache.
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Tack as a noun (obsolete):
A peculiar flavour or taint.
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Tack as a noun (colloquial):
That which is tacky; something cheap and gaudy.