Uigur vs Uighur language

Uigur and Uighur language both are nouns.

Word	Noun	Adjective	Verb	Adverb
Uigur	Yes	No	No	No
Uighur language	Yes	No	No	No

As nouns, Uigur and Uighur language are synonyms defined as:

Uigur and Uighur language: the Turkic language spoken by approximately 7,000,000 Uighur in extreme northwestern China

Other synonyms of Uigur include Uighur, Uigur language, Uygur, Uygur language.

Uigur (noun)	Uighur language (noun)
the Turkic language spoken by approximately 7,000,000 Uighur in extreme northwestern China	the Turkic language spoken by approximately 7,000,000 Uighur in extreme northwestern China
the script (derived from Aramaic) used to write the Uighur language
a member of a people who speak Uighur and live in Xinjiang and adjacent areas