Viola vs viola

Viola and viola both are nouns.

Word	Noun	Adjective	Verb	Adverb
Viola	Yes	No	No	No
viola	Yes	No	No	No

Viola (noun)	viola (noun)
large genus of flowering herbs of temperate regions	any of the numerous plants of the genus Viola
	a bowed stringed instrument slightly larger than a violin, tuned a fifth lower