factotum vs retainer

factotum and retainer both are nouns.

Word	Noun	Adjective	Verb	Adverb
factotum	Yes	No	No	No
retainer	Yes	No	No	No

As nouns, retainer is a hypernym of factotum; that is, retainer is a word with a broader meaning than factotum:

factotum: a servant employed to do a variety of jobs
retainer: a person working in the service of another (especially in the household)

Other hypernyms of factotum include servant.

factotum (noun)	retainer (noun)
a servant employed to do a variety of jobs	a dental appliance that holds teeth (or a prosthesis) in position after orthodontic treatment
	a person working in the service of another (especially in the household)
	a fee charged in advance to retain the services of someone