coat vs spread over

coat is a noun but spread over is not a noun.

Word	Noun	Adjective	Verb	Adverb
coat	Yes	No	Yes	No
spread over	No	No	Yes	No

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

Other hypernyms of coat include cover.

coat (noun)	spread over (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

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