Elamite language vs Susian language

Elamite language and Susian language both are nouns.

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

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

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

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

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