slip vs slide

slip and slide both are nouns.

Word	Noun	Adjective	Verb	Adverb
slip	Yes	No	Yes	No
slide	Yes	No	Yes	No

As nouns, slide is a hypernym of slip; that is, slide is a word with a broader meaning than slip:

slip: an unexpected slide
slide: the act of moving smoothly along a surface while remaining in contact with it

Other hypernyms of slip include coast, glide.

As verbs, slip and slide are synonyms defined as:

slip and slide: move obliquely or sideways, usually in an uncontrolled manner

Other synonyms of slip include skid, slew, slue.

slip (noun)	slide (noun)
a flight maneuver; aircraft slides sideways in the air	the act of moving smoothly along a surface while remaining in contact with it
a socially awkward or tactless act	sloping channel through which things can descend
the act of avoiding capture (especially by cunning)	a transparency mounted in a frame; viewed with a slide projector
an unexpected slide	a small flat rectangular piece of glass on which specimens can be mounted for microscopic study
a minor inadvertent mistake usually observed in speech or writing or in small accidents or memory lapses etc.	plaything consisting of a sloping chute down which children can slide
a woman's sleeveless undergarment	(music) rapid sliding up or down the musical scale
bed linen consisting of a cover for a pillow	(geology) the descent of a large mass of earth or rocks or snow etc.
artifact consisting of a narrow flat piece of material
a small sheet of paper
a slippery smoothness
an accidental misstep threatening (or causing) a fall
a place where a craft can be made fast
a young and slender person
a part (sometimes a root or leaf or bud) removed from a plant to propagate a new plant through rooting or grafting
potter's clay that is thinned and used for coating or decorating ceramics

slip (verb)	slide (verb)
fall to a lower standard	to pass or move unobtrusively or smoothly
move out of position	move obliquely or sideways, usually in an uncontrolled manner
insert inconspicuously or quickly or quietly	move smoothly along a surface
to make a mistake or be incorrect
pass out of one's memory
move obliquely or sideways, usually in an uncontrolled manner
move stealthily
move easily
move smoothly and easily
cause to move with a smooth or sliding motion
pass on stealthily