participant role vs semantic role

participant role and semantic role both are nouns.

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

As nouns, participant role and semantic role are synonyms defined as:

participant role and semantic role: (linguistics) the underlying relation that a constituent has with the main verb in a clause

participant role (noun)	semantic role (noun)
(linguistics) the underlying relation that a constituent has with the main verb in a clause	(linguistics) the underlying relation that a constituent has with the main verb in a clause