insurance underwriter vs insurer

insurance underwriter and insurer both are nouns.

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

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

insurance underwriter and insurer: a financial institution that sells insurance

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

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