accompaniment vs accompany

accompaniment is a noun but accompany is not a noun.

Word	Noun	Adjective	Verb	Adverb
accompaniment	Yes	No	No	No
accompany	No	No	Yes	No

accompaniment (noun)	accompany (noun)
the act of accompanying someone or something in order to protect them
something added to complete or embellish or make perfect
a musical part (vocal or instrumental) that supports or provides background for other musical parts
an event or situation that happens at the same time as or in connection with another

accompaniment (verb)	accompany (verb)
	perform an accompaniment to
	go or travel along with
	be present or associated with an event or entity
	be a companion to somebody