Susian vs Elamitic language

Susian and Elamitic language both are nouns.

Word	Noun	Adjective	Verb	Adverb
Susian	Yes	No	No	No
Elamitic language	Yes	No	No	No

As nouns, Susian and Elamitic language are synonyms defined as:

Susian and Elamitic language: an extinct ancient language of unknown affinities; spoken by the Elamites

Other synonyms of Susian include Elamite, Elamite language, Elamitic, Susian language.

Susian (noun)	Elamitic language (noun)
an extinct ancient language of unknown affinities; spoken by the Elamites	an extinct ancient language of unknown affinities; spoken by the Elamites