locative vs participant role

locative and participant role both are nouns.

Word	Noun	Adjective	Verb	Adverb
locative	Yes	No	No	No
participant role	Yes	No	No	No

As nouns, participant role is a hypernym of locative; that is, participant role is a word with a broader meaning than locative:

locative: the semantic role of the noun phrase that designates the place of the state or action denoted by the verb
participant role: (linguistics) the underlying relation that a constituent has with the main verb in a clause

Other hypernyms of locative include semantic role.

locative (noun)	participant role (noun)
the semantic role of the noun phrase that designates the place of the state or action denoted by the verb	(linguistics) the underlying relation that a constituent has with the main verb in a clause
A case used to indicate place, or the place where, or wherein.