get off vs horseback riding

get off is not a noun while horseback riding is a noun.

Word	Noun	Adjective	Verb	Adverb
get off	No	No	Yes	No
horseback riding	Yes	No	No	No

get off (noun)	horseback riding (noun)
	travel by being carried on horseback
	the sport of sitting on the back of a horse while controlling its movements

get off (verb)	horseback riding (verb)
escape potentially unpleasant consequences; get away with a forbidden action
cause to be acquitted; get off the hook; in a legal case
deliver verbally
transfer
get high, stoned, or drugged
send via the postal service
alight from (a horse)
get out of quickly
leave a vehicle, aircraft, etc.
enjoy in a sexual way
be relieved of one's duties temporarily