Sinhalese language vs Singhalese language

Sinhalese language and Singhalese language both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sinhalese language	Yes	No	No	No
Singhalese language	Yes	No	No	No

As nouns, Sinhalese language and Singhalese language are synonyms defined as:

Sinhalese language and Singhalese language: the Indic language spoken by the people of Sri Lanka

Other synonyms of Sinhalese language include Singhalese, Sinhala, Sinhala language, Sinhalese.

Sinhalese language (noun)	Singhalese language (noun)
the Indic language spoken by the people of Sri Lanka	the Indic language spoken by the people of Sri Lanka