brush on vs coat

brush on is not a noun while coat is a noun.

Word	Noun	Adjective	Verb	Adverb
brush on	No	No	Yes	No
coat	Yes	No	Yes	No

As verbs, coat is a hypernym of brush on; that is, coat is a word with a broader meaning than brush on:

Other hypernyms of brush on include surface.

brush on (noun)	coat (noun)
	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

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