fall vs slip

fall and slip both are nouns.

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

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

Other hypernyms of fall include trip.

fall (noun)	slip (noun)
a sudden drop from an upright position	a flight maneuver; aircraft slides sideways in the air
the act of surrendering (usually under agreed conditions)	a socially awkward or tactless act
a lapse into sin; a loss of innocence or of chastity	the act of avoiding capture (especially by cunning)
a sudden sharp decrease in some quantity	an unexpected slide
a free and rapid descent by the force of gravity	a minor inadvertent mistake usually observed in speech or writing or in small accidents or memory lapses etc.
a sudden decline in strength or number or importance	a woman's sleeveless undergarment
when a wrestler's shoulders are forced to the mat	bed linen consisting of a cover for a pillow
a movement downward	artifact consisting of a narrow flat piece of material
a downward slope or bend	a small sheet of paper
the season when the leaves fall from the trees	a slippery smoothness
the time of day immediately following sunset	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

fall (verb)	slip (verb)
occur at a specified time or place	fall to a lower standard
decrease in size, extent, or range	move out of position
pass suddenly and passively into a state of body or mind	insert inconspicuously or quickly or quietly
be born, used chiefly of lambs	to make a mistake or be incorrect
come out; issue	pass out of one's memory
assume a disappointed or sad expression	move obliquely or sideways, usually in an uncontrolled manner
begin vigorously	move stealthily
come as if by falling	move easily
be cast down	move smoothly and easily
go as if by falling	cause to move with a smooth or sliding motion
fall or flow in a certain way	pass on stealthily
move downward and lower, but not necessarily all the way
move in a specified direction
descend in free fall under the influence of gravity
slope downward
drop oneself to a lower or less erect position
lose an upright position suddenly
to be given by assignment or distribution
be captured
fall to somebody by assignment or lot; passed
come into the possession of
to be given by right or inheritance
be inherited by
lose office or power
yield to temptation or sin
suffer defeat, failure, or ruin
lose one's chastity
die, as in battle or in a hunt
be due
come under, be classified or included
touch or seem as if touching visually or audibly
fall from clouds