engineer vs doer

engineer and doer both are nouns.

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

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

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

Other hypernyms of engineer include actor, worker.

engineer (noun)	doer (noun)
a person who uses scientific knowledge to solve practical problems	a person who acts and gets things done
the operator of a railway locomotive

engineer (verb)	doer (verb)
plan and direct (a complex undertaking)
design as an engineer