coat button vs coat

coat button and coat both are nouns.

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

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

coat button (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