vitalizer vs doer

vitalizer and doer both are nouns.

Word	Noun	Adjective	Verb	Adverb
vitalizer	Yes	No	No	No
doer	Yes	No	No	No

As nouns, doer is a hypernym of vitalizer; that is, doer is a word with a broader meaning than vitalizer:

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

Other hypernyms of vitalizer include actor, worker.

vitalizer (noun)	doer (noun)
someone who imparts energy and vitality and spirit to other people	a person who acts and gets things done