steep vs exorbitant

steep is a noun but exorbitant is not a noun.

Word	Noun	Adjective	Verb	Adverb
steep	Yes	Yes	Yes	No
exorbitant	No	Yes	No	No

As adjectives, steep and exorbitant are synonyms defined as:

Other synonyms of steep include extortionate, outrageous, unconscionable, usurious.

steep (noun)	exorbitant (noun)
a steep place (as on a hill)

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

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