applied scientist vs doer

applied scientist and doer both are nouns.

Word	Noun	Adjective	Verb	Adverb
applied scientist	Yes	No	No	No
doer	Yes	No	No	No

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

applied scientist: a person who uses scientific knowledge to solve practical problems
doer: a person who acts and gets things done

Other hypernyms of applied scientist include actor, worker.

applied scientist (noun)	doer (noun)
a person who uses scientific knowledge to solve practical problems	a person who acts and gets things done