salutatory speaker vs salutatorian

salutatory speaker and salutatorian both are nouns.

Word	Noun	Adjective	Verb	Adverb
salutatory speaker	Yes	No	No	No
salutatorian	Yes	No	No	No

As nouns, salutatory speaker and salutatorian are synonyms defined as:

salutatory speaker and salutatorian: a graduating student with the second highest academic rank; may deliver the opening address at graduation exercises

salutatory speaker (noun)	salutatorian (noun)
a graduating student with the second highest academic rank; may deliver the opening address at graduation exercises	a graduating student with the second highest academic rank; may deliver the opening address at graduation exercises