coat vs fur coat

coat and fur coat both are nouns.

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

As nouns, fur coat is a hyponym of coat; that is, fur coat is a word with a more specific, narrower meaning than coat:

coat: an outer garment that has sleeves and covers the body from shoulder down; worn outdoors
fur coat: a coat made of fur

coat (noun)	fur coat (noun)
growth of hair or wool or fur covering the body of an animal	a coat made of fur
an outer garment that has sleeves and covers the body from shoulder down; worn outdoors
a thin layer covering something

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