waltz vs valse

waltz and valse both are nouns.

Word	Noun	Adjective	Verb	Adverb
waltz	Yes	No	Yes	No
valse	Yes	No	No	No

As nouns, waltz and valse are synonyms defined as:

waltz and valse: a ballroom dance in triple time with a strong accent on the first beat

waltz (noun)	valse (noun)
a ballroom dance in triple time with a strong accent on the first beat	a ballroom dance in triple time with a strong accent on the first beat
music composed in triple time for waltzing
an assured victory (especially in an election)

waltz (verb)	valse (verb)
dance a waltz