The difference between Buck and Button

Buck as a noun:

A male deer, antelope, sheep, goat, rabbit, hare, and sometimes the male of other animals such as the ferret and shad.

Buck as a noun (US):

An uncastrated sheep, a ram.

Buck as a noun:

A young buck; an adventurous, impetuous, dashing, or high-spirited young man.

Buck as a noun (British, obsolete):

A fop or dandy.

Buck as a noun (US, dated, derogatory):

A black or Native American man.

Buck as a noun (US, Australia, NZ, Canada, informal):

A dollar (one hundred cents).

Buck as a noun (South Africa, informal):

A rand (currency unit).

Buck as a noun (by extension, Australia, South Africa, US, informal):

Money

Buck as a noun (US, slang):

One hundred.

Buck as a noun (dated):

An object of various types, placed on a table to indicate turn or status; such as a brass object, placed in rotation on a US Navy wardroom dining table to indicate which officer is to be served first, or an item passed around a poker table indicating the dealer or placed in the pot to remind the winner of some privilege or obligation when his or her turn to deal next comes.

Buck as a noun (US, in certain metaphors or phrases):

Blame; responsibility; scapegoating; finger-pointing.

Buck as a noun (UK, dialect):

The body of a post mill, particularly in East Anglia. See Wikipedia:Windmill machinery.

Buck as a noun (finance):

One million dollars.

Buck as a noun (informal):

A euro.

Buck as a noun:

A frame on which firewood is sawed; a sawhorse; a sawbuck.

Buck as a noun:

A wood or metal frame used by automotive customizers and restorers to assist in the shaping of sheet metal bodywork. See [http://www.hotrod.com/how-to/additional-how-to/1009sr-making-a-wood-buck/ Street Rodder "Making a Wood Buck"].

Buck as a noun (AAVE, dated, dance):

Buck as a noun:

Buck as a verb (intransitive):

To copulate, as bucks and does.

Buck as a verb (intransitive):

To bend; buckle.

Buck as a verb (intransitive, of a horse, _, or similar saddle or pack animal):

To leap upward arching its back, coming down with head low and forelegs stiff, forcefully kicking its hind legs upward, often in an attempt to dislodge or throw a rider or pack.

Buck as a verb (transitive, of a horse, _, or similar saddle or pack animal):

To throw (a rider or pack) by bucking.

Buck as a verb (transitive, military):

To subject to a mode of punishment which consists of tying the wrists together, passing the arms over the bent knees, and putting a stick across the arms and in the angle formed by the knees.

Buck as a verb (intransitive, by extension):

To resist obstinately; oppose or object strongly.

Buck as a verb (intransitive, by extension):

To move or operate in a sharp, jerking, or uneven manner.

Buck as a verb (transitive, by extension):

To overcome or shed (e.g., an impediment or expectation), in pursuit of a goal; to force a way through despite (an obstacle); to resist or proceed against.

Buck as a verb (riveting):

To press a reinforcing device (bucking bar) against (the force of a rivet) in order to absorb vibration and increase expansion. See Wikipedia: Rivet:Installation.

Buck as a verb (forestry):

To saw a felled tree into shorter lengths, as for firewood.

Buck as a verb (electronics):

To output a voltage that is lower than the input voltage. See Wikipedia: Buck converter

Buck as a noun (Scotland):

The beech tree.

Buck as a noun:

Lye or suds in which cloth is soaked in the operation of bleaching, or in which clothes are washed.

Buck as a noun:

The cloth or clothes soaked or washed.

Buck as a verb:

To soak, steep or boil in lye or suds, as part of the bleaching process.

Buck as a verb:

To wash (clothes) in lye or suds, or, in later usage, by beating them on stones in running water.

Buck as a verb (mining):

To break up or pulverize, as ores.

Button as a noun:

A knob or disc that is passed through a loop or (buttonhole), serving as a fastener.

Button as a noun:

A mechanical device meant to be pressed with a finger in order to open or close an electric circuit or to activate a mechanism.

Button as a noun (graphical user interface):

An on-screen control that can be selected as an activator of an attached function.

Button as a noun (US):

A badge worn on clothes, fixed with a pin through the fabric.

Button as a noun (botany):

A bud.

Button as a noun:

The head of an unexpanded mushroom.

Button as a noun (slang):

The clitoris.

Button as a noun (curling):

The center (bullseye) of the house.

Button as a noun (fencing):

The soft circular tip at the end of a foil.

Button as a noun (poker):

A plastic disk used to represent the person in last position in a poker game; also dealer's button.

Button as a noun (poker):

The player who is last to act after the flop, turn and river, who possesses the button.

Button as a noun (archaic):

A person who acts as a decoy.

Button as a noun:

A raised pavement marker to further indicate the presence of a pavement marking painted stripe.

Button as a noun (South Africa, slang):

A methaqualone tablet (used as a recreational drug).

Button as a noun:

A piece of wood or metal, usually flat and elongated, turning on a nail or screw, to fasten something, such as a door.

Button as a noun:

A globule of metal remaining on an assay cupel or in a crucible, after fusion.

Button as a noun:

A knob; a small ball; a small, roundish mass.

Button as a noun:

A small white blotch on a cat's coat.

Button as a noun (UK, archaic):

A unit of length equal to 1/12 of an inch.

Button as a noun:

The means for initiating a nuclear strike or similar cataclysmic occurrence.

Button as a noun (lutherie):

In an instrument of the violin family, the near semi-circular shape extending from the top of the back plate of the instrument, meeting the heel of the neck.

Button as a noun (lutherie):

.

Button as a noun (lutherie, bowmaking):

.

Button as a noun:

The least amount of care or interest; a whit or jot.

Button as a noun (comedy):

The final joke at the end of a comedic act (such as a sketch, set, or scene).

Button as a verb (transitive):

To fasten with a button.

Button as a verb (intransitive):

To be fastened by a button or buttons.