squirmer vs doer

squirmer and doer both are nouns.

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

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

Other hypernyms of squirmer include actor, worker.

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