insurance vs policy

insurance and policy both are nouns.

Word	Noun	Adjective	Verb	Adverb
insurance	Yes	No	No	No
policy	Yes	No	No	No

As nouns, insurance and policy are synonyms defined as:

Other synonyms of insurance include insurance policy.

insurance (noun)	policy (noun)
written contract or certificate of insurance	a plan of action adopted by an individual or social group
promise of reimbursement in the case of loss; paid to people or companies so concerned about hazards that they have made prepayments to an insurance company	a line of argument rationalizing the course of action of a government
protection against future loss	written contract or certificate of insurance