rusher vs doer

rusher and doer both are nouns.

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

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

rusher: a person who rushes; someone in a hurry; someone who acts precipitously
doer: a person who acts and gets things done

Other hypernyms of rusher include actor, worker.

rusher (noun)	doer (noun)
a person who rushes; someone in a hurry; someone who acts precipitously	a person who acts and gets things done
someone who migrates as part of a rush to a new gold field or a new territory
(football) a ball carrier who tries to gain ground by running with the ball