explorer vs worker

explorer and worker both are nouns.

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

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

explorer: someone who travels into little known regions (especially for some scientific purpose)
worker: a person who acts and gets things done

Other hypernyms of explorer include actor, doer.

explorer (noun)	worker (noun)
someone who travels into little known regions (especially for some scientific purpose)	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