Gaelic language vs Goidelic language

Gaelic language and Goidelic language both are nouns.

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

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

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

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

Gaelic language (noun)	Goidelic 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