mount vs mountainside

mount and mountainside both are nouns.

Word	Noun	Adjective	Verb	Adverb
mount	Yes	No	Yes	No
mountainside	Yes	No	No	No

mount (noun)	mountainside (noun)
the act of climbing something	the side or slope of a mountain
a lightweight horse kept for riding only
something forming a back that is added for strengthening
a mounting consisting of a piece of metal (as in a ring or other jewelry) that holds a gem in place
a land mass that projects well above its surroundings; higher than a hill

mount (verb)	mountainside (verb)
go up or advance
fix onto a backing, setting, or support
attach to a support
copulate with
put up or launch
prepare and supply with the necessary equipment for execution or performance
go upward with gradual or continuous progress
get up on the back of