Elamitic language vs Susian language

Elamitic language and Susian language both are nouns.

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

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

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

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

Elamitic 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