overcoat vs coat

overcoat and coat both are nouns.

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

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

overcoat: a heavy coat worn over clothes in winter
coat: an outer garment that has sleeves and covers the body from shoulder down; worn outdoors

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

Other hypernyms of overcoat include coating.

overcoat (noun)	coat (noun)
a heavy coat worn over clothes in winter	growth of hair or wool or fur covering the body of an animal
an additional protective coating (as of paint or varnish)	an outer garment that has sleeves and covers the body from shoulder down; worn outdoors
	a thin layer covering something

overcoat (verb)	coat (verb)
	cover or provide with a coat
	put a coat on; cover the surface of; furnish with a surface
	form a coat over