surveyor vs locater

surveyor and locater both are nouns.

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

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

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

Other hyponyms of surveyor include lineman, locator.

surveyor (noun)	locater (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