adjustor vs investigator

adjustor and investigator both are nouns.

Word	Noun	Adjective	Verb	Adverb
adjustor	Yes	No	No	No
investigator	Yes	No	No	No

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

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

adjustor (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