nocturne vs notturno

nocturne and notturno both are nouns.

Word	Noun	Adjective	Verb	Adverb
nocturne	Yes	No	No	No
notturno	Yes	No	No	No

As nouns, nocturne and notturno are synonyms defined as:

nocturne and notturno: a pensive lyrical piece of music (especially for the piano)

nocturne (noun)	notturno (noun)
a pensive lyrical piece of music (especially for the piano)	a pensive lyrical piece of music (especially for the piano)