unemployed vs employed

unemployed is a noun but employed is not a noun.

Word	Noun	Adjective	Verb	Adverb
unemployed	Yes	Yes	No	No
employed	No	Yes	No	No

unemployed (noun)	employed (noun)
people who are involuntarily out of work (considered as a group)

unemployed (adjective)	employed (adjective)
not engaged in a gainful occupation	having your services engaged for; or having a job especially one that pays wages or a salary
	made useful