vitaliser vs worker

vitaliser and worker both are nouns.

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

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

vitaliser: someone who imparts energy and vitality and spirit to other people
worker: a person who acts and gets things done

Other hypernyms of vitaliser include actor, doer.

vitaliser (noun)	worker (noun)
someone who imparts energy and vitality and spirit to other people	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