chesterfield vs overcoat

chesterfield and overcoat both are nouns.

Word	Noun	Adjective	Verb	Adverb
chesterfield	Yes	No	No	No
overcoat	Yes	No	No	No

As nouns, overcoat is a hypernym of chesterfield; that is, overcoat is a word with a broader meaning than chesterfield:

Other hypernyms of chesterfield include greatcoat, topcoat.

chesterfield (noun)	overcoat (noun)
a fitted overcoat with a velvet collar	a heavy coat worn over clothes in winter
an overstuffed davenport with upright armrests	an additional protective coating (as of paint or varnish)