Guinevere vs Guenevere

Guinevere and Guenevere both are nouns.

Word	Noun	Adjective	Verb	Adverb
Guinevere	Yes	No	No	No
Guenevere	Yes	No	No	No

As nouns, Guinevere and Guenevere are synonyms defined as:

Guinevere and Guenevere: (Arthurian legend) wife of King Arthur; in some versions of the legend she became Lancelot's lover and that led to the end of the Knights of the Round Table

Guinevere (noun)	Guenevere (noun)
(Arthurian legend) wife of King Arthur; in some versions of the legend she became Lancelot's lover and that led to the end of the Knights of the Round Table	(Arthurian legend) wife of King Arthur; in some versions of the legend she became Lancelot's lover and that led to the end of the Knights of the Round Table