inimical vs hostile

inimical is not a noun while hostile is a noun.

Word	Noun	Adjective	Verb	Adverb
inimical	No	Yes	No	No
hostile	Yes	Yes	No	No

inimical (noun)	hostile (noun)
	troops belonging to the enemy's military forces

inimical (adjective)	hostile (adjective)
not friendly	characterized by enmity or ill will
	not belonging to your own country's forces or those of an ally
	unsolicited and resisted by the management of the target company (used of attempts to buy or take control of a business)
	very unfavorable to life or growth
	impossible to bring into friendly accord