The difference between Boo-boo and Slip

Boo-boo as a noun (countable, colloquial, often, childish):

A mistake or error.

Boo-boo as a noun (countable, colloquial, childish, by or to young children):

A minor injury, such as a cut or a bruise.

Boo-boo as a noun (uncountable, colloquial, childish, by or to young children):

Feces.

Boo-boo as a verb (colloquial, childish, by or to young children):

To defecate.

Slip as a noun (ceramics):

A thin, slippery mix of clay and water.

Slip as a noun (obsolete):

Mud, slime.

Slip as a noun:

A twig or shoot; a cutting.

Slip as a noun (obsolete):

A descendant, a scion.

Slip as a noun:

A young person (now usually with introducing descriptive qualifier).

Slip as a noun:

A long, thin piece of something.

Slip as a noun:

A small piece of paper, especially one longer than it is wide, typically a form for writing on or one giving printed information.

Slip as a noun (marine insurance):

A memorandum of the particulars of a risk for which a policy is to be executed. It usually bears the broker's name and is initiated by the underwriters.

Slip as a verb (intransitive):

To lose one's traction on a slippery surface; to slide due to a lack of friction.

Slip as a verb (intransitive):

To err.

Slip as a verb (intransitive):

To accidentally reveal a secret or otherwise say something unintentional.

Slip as a verb (intransitive):

To move or fly (out of place); to shoot; often with out, off, etc.

Slip as a verb (transitive):

To pass (a note, money, etc.), often covertly.

Slip as a verb (transitive):

To cause to move smoothly and quickly; to slide; to convey gently or secretly.

Slip as a verb (intransitive):

To move quickly and often secretively; to depart, withdraw, enter, appear, intrude, or escape as if by sliding.

Slip as a verb (intransitive, figuratively):

To move down; to slide.

Slip as a verb (transitive, falconry):

To release (a dog, a bird of prey, etc.) to go after a quarry.

Slip as a verb (transitive, cooking):

To remove the skin of a soft fruit, such as a tomato or peach, by blanching briefly in boiling water, then transferring to cold water so that the skin peels, or slips, off easily.

Slip as a verb (obsolete):

To omit; to lose by negligence.

Slip as a verb:

To cut slips from; to cut; to take off; to make a slip or slips of.

Slip as a verb:

To cause to slip or slide off, or out of place.

Slip as a verb:

To bring forth (young) prematurely; to slink.

Slip as a verb (transitive, business):

To cause (a schedule or release, etc.) to go beyond the allotted deadline.

Slip as a noun:

An act or instance of slipping.

Slip as a noun:

A woman's undergarment worn under a skirt or dress to conceal unwanted nudity that may otherwise be revealed by the skirt or dress itself; a shift.

Slip as a noun:

A slipdress.

Slip as a noun:

A mistake or error.

Slip as a noun (nautical):

A berth; a space for a ship to moor.

Slip as a noun (nautical):

A difference between the theoretical distance traveled per revolution of the propeller and the actual advance of the vessel.

Slip as a noun (medicine):

A one-time return to previous maladaptive behaviour after cure.

Slip as a noun (cricket):

Any of several fielding positions to the off side of the wicket keeper, designed to catch the ball after being deflected from the bat; a fielder in that position (See first slip, second slip, third slip, fourth slip and fifth slip.)

Slip as a noun:

A number between 0 and 1 that is the difference between the angular speed of a rotating magnetic field and the angular speed of its rotor, divided by the angular speed of the magnetic field.

Slip as a noun:

A leash or string by which a dog is held; so called from its being made in such a manner as to slip, or become loose, by relaxation of the hand.

Slip as a noun:

An escape; a secret or unexpected desertion.

Slip as a noun (printing, dated):

A portion of the columns of a newspaper etc. struck off by itself; a proof from a column of type when set up and in the galley.

Slip as a noun (dated):

A child's pinafore.

Slip as a noun:

An outside covering or case.

Slip as a noun (obsolete):

A counterfeit piece of money, made from brass covered with silver.

Slip as a noun:

Matter found in troughs of grindstones after the grinding of edge tools.

Slip as a noun (ceramics):

An aqueous suspension of minerals, usually clay, used, among other things, to stick workpieces together.

Slip as a noun:

A particular quantity of yarn.

Slip as a noun (UK, dated):

A narrow passage between buildings.

Slip as a noun (US):

A long seat or narrow pew in churches, often without a door.

Slip as a noun (mining):

A dislocation of a lead, destroying continuity.

Slip as a noun (engineering):

The motion of the centre of resistance of the float of a paddle wheel, or the blade of an oar, through the water horizontally, or the difference between a vessel's actual speed and the speed it would have if the propelling instrument acted upon a solid; also, the velocity, relatively to still water, of the backward current of water produced by the propeller.

Slip as a noun (electrical):

The difference between the actual and synchronous speeds of an induction motor.

Slip as a noun:

A fish, the sole.