birth vs worker

birth and worker both are nouns.

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

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

Other hypernyms of birth include actor, doer.

birth (noun)	worker (noun)
the event of being born	sterile member of a colony of social insects that forages for food and cares for the larvae
a baby born; an offspring	a person who works at a specific occupation
the process of giving birth	a member of the working class (not necessarily employed)
the kinship relation of an offspring to the parents	a person who acts and gets things done
the time when something begins (especially life)

birth (verb)	worker (verb)
cause to be born