insurance company vs insurance underwriter

insurance company and insurance underwriter both are nouns.

Word	Noun	Adjective	Verb	Adverb
insurance company	Yes	No	No	No
insurance underwriter	Yes	No	No	No

As nouns, insurance company and insurance underwriter are synonyms defined as:

insurance company and insurance underwriter: a financial institution that sells insurance

Other synonyms of insurance company include insurance firm, insurer, underwriter.

insurance company (noun)	insurance underwriter (noun)
a financial institution that sells insurance	a financial institution that sells insurance