complexifier vs doer

complexifier and doer both are nouns.

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

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

Other hypernyms of complexifier include actor, worker.

complexifier (noun)	doer (noun)
someone makes things complex	a person who acts and gets things done