Irish vs Goidelic language

Irish and Goidelic language both are nouns.

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

As nouns, Goidelic language is a hypernym of Irish; that is, Goidelic language is a word with a broader meaning than Irish:

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

Other hypernyms of Irish include Erse, Erse language, Gaelic, Gaelic language, Goidelic.

Irish (noun)	Goidelic language (noun)
the Celtic language of Ireland	any of several related languages of the Celts in Ireland and Scotland
whiskey made in Ireland chiefly from barley
people of Ireland or of Irish extraction

Irish (adjective)	Goidelic language (adjective)
of or relating to or characteristic of Ireland or its people