wriggler vs doer

wriggler and doer both are nouns.

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

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

Other hypernyms of wriggler include actor, worker.

wriggler (noun)	doer (noun)
larva of a mosquito	a person who acts and gets things done
one who can't stay still (especially a child)