Erse language vs Gaelic language

Erse language and Gaelic language both are nouns.

Word	Noun	Adjective	Verb	Adverb
Erse language	Yes	No	No	No
Gaelic language	Yes	No	No	No

As nouns, Erse language and Gaelic language are synonyms defined as:

Erse language and Gaelic language: any of several related languages of the Celts in Ireland and Scotland

Other synonyms of Erse language include Erse, Gaelic, Goidelic, Goidelic language.

Erse language (noun)	Gaelic language (noun)
any of several related languages of the Celts in Ireland and Scotland	any of several related languages of the Celts in Ireland and Scotland