intellectual vs worker

intellectual and worker both are nouns.

Word	Noun	Adjective	Verb	Adverb
intellectual	Yes	Yes	No	No
worker	Yes	No	No	No

As nouns, worker is a hypernym of intellectual; that is, worker is a word with a broader meaning than intellectual:

Other hypernyms of intellectual include actor, doer.

intellectual (noun)	worker (noun)
a person who uses the mind creatively	sterile member of a colony of social insects that forages for food and cares for the larvae
	a person who works at a specific occupation
	a member of the working class (not necessarily employed)
	a person who acts and gets things done

intellectual (adjective)	worker (adjective)
appealing to or using the intellect
involving intelligence rather than emotions or instinct
of or associated with or requiring the use of the mind