steep vs steep-sided

steep is a noun but steep-sided is not a noun.

Word	Noun	Adjective	Verb	Adverb
steep	Yes	Yes	Yes	No
steep-sided	No	Yes	No	No

steep (noun)	steep-sided (noun)
a steep place (as on a hill)

steep (adjective)	steep-sided (adjective)
having a sharp inclination	having very steep sides
of a slope; set at a high angle
greatly exceeding bounds of reason or moderation

steep (verb)	steep-sided (verb)
let sit in a liquid to extract a flavor or to cleanse
devote (oneself) fully to