employable vs worker

employable and worker both are nouns.

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

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

employable (noun)	worker (noun)
a person who is qualified and ready to work	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

employable (adjective)	worker (adjective)
physically and mentally capable of working at a regular job and available