hawkshaw vs investigator

hawkshaw and investigator both are nouns.

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

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

Other hypernyms of hawkshaw include detective, police detective, tec.

hawkshaw (noun)	investigator (noun)
someone who is a detective	someone who investigates
	a scientist who devotes himself to doing research
	a police officer who investigates crimes