kneeler vs worker

kneeler and worker both are nouns.

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

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

Other hypernyms of kneeler include actor, doer.

kneeler (noun)	worker (noun)
a board (sometimes cushioned) for someone to kneel on	sterile member of a colony of social insects that forages for food and cares for the larvae
a person in a kneeling position	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