What kind of noun is company is it collective noun?

The noun company is a singular, common noun.

The noun company is an abstract noun as a Word for a commercial business.

The noun company is a concrete noun as a Word for a guest or guests; companions or associates; a number of individuals gathered together, a group; a troupe of dramatic or musical performers.

The noun company is an uncountable noun as a Word for a guest or guests or the people you are with.

The Word company is an obsolete verb form for associate with or keep company with.

The noun company is often used as an attributive noun, a noun used to describe another noun, for example a company caror a company policy.