fall vs get off

fall is a noun but get off is not a noun.

Word	Noun	Adjective	Verb	Adverb
fall	Yes	No	Yes	No
get off	No	No	Yes	No

As verbs, get off is a hyponym of fall; that is, get off is a word with a more specific, narrower meaning than fall:

fall (noun)	get off (noun)
a sudden drop from an upright position
the act of surrendering (usually under agreed conditions)
a lapse into sin; a loss of innocence or of chastity
a sudden sharp decrease in some quantity
a free and rapid descent by the force of gravity
a sudden decline in strength or number or importance
when a wrestler's shoulders are forced to the mat
a movement downward
a downward slope or bend
the season when the leaves fall from the trees
the time of day immediately following sunset

fall (verb)	get off (verb)
occur at a specified time or place	escape potentially unpleasant consequences; get away with a forbidden action
decrease in size, extent, or range	cause to be acquitted; get off the hook; in a legal case
pass suddenly and passively into a state of body or mind	deliver verbally
be born, used chiefly of lambs	transfer
come out; issue	get high, stoned, or drugged
assume a disappointed or sad expression	send via the postal service
begin vigorously	alight from (a horse)
come as if by falling	get out of quickly
be cast down	leave a vehicle, aircraft, etc.
go as if by falling	enjoy in a sexual way
fall or flow in a certain way	be relieved of one's duties temporarily
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