unemployed vs unemployed people

unemployed and unemployed people both are nouns.

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

As nouns, unemployed and unemployed people are synonyms defined as:

unemployed and unemployed people: people who are involuntarily out of work (considered as a group)

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

unemployed (adjective)	unemployed people (adjective)
not engaged in a gainful occupation