claim agent vs investigator

claim agent and investigator both are nouns.

Word	Noun	Adjective	Verb	Adverb
claim agent	Yes	No	No	No
investigator	Yes	No	No	No

As nouns, investigator is a hypernym of claim agent; that is, investigator is a word with a broader meaning than claim agent:

claim agent: one who investigates insurance claims or claims for damages and recommends an effective settlement
investigator: someone who investigates

claim agent (noun)	investigator (noun)
one who investigates insurance claims or claims for damages and recommends an effective settlement	someone who investigates
	a scientist who devotes himself to doing research
	a police officer who investigates crimes