surveyor vs locator

surveyor and locator both are nouns.

Word	Noun	Adjective	Verb	Adverb
surveyor	Yes	No	No	No
locator	Yes	No	No	No

As nouns, locator is a hyponym of surveyor; that is, locator is a word with a more specific, narrower meaning than surveyor:

surveyor: an engineer who determines the boundaries and elevations of land or structures
locator: a person who fixes the boundaries of land claims

Other hyponyms of surveyor include lineman, locater.

surveyor (noun)	locator (noun)
an engineer who determines the boundaries and elevations of land or structures	a person who fixes the boundaries of land claims
someone who conducts a statistical survey