seasonal worker vs worker

seasonal worker and worker both are nouns.

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

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

seasonal worker (noun)	worker (noun)
a worker who finds employment only in certain seasons	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