worker vs insect

worker and insect both are nouns.

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

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

worker: sterile member of a colony of social insects that forages for food and cares for the larvae
insect: small air-breathing arthropod

worker (noun)	insect (noun)
sterile member of a colony of social insects that forages for food and cares for the larvae	small air-breathing arthropod
a person who works at a specific occupation	a person who has a nasty or unethical character undeserving of respect
a member of the working class (not necessarily employed)
a person who acts and gets things done