splendor vs splendour

splendor and splendour both are nouns.

Word	Noun	Adjective	Verb	Adverb
splendor	Yes	No	No	No
splendour	Yes	No	No	No

As nouns, splendor and splendour are synonyms defined as:

Other synonyms of splendor include brilliancy, luster, lustre.

As nouns, splendor and splendour are synonyms defined as:

splendor and splendour: the quality of being magnificent or splendid or grand

Other synonyms of splendor include brilliance, grandeur, grandness, magnificence.

splendor (noun)	splendour (noun)
a quality that outshines the usual	a quality that outshines the usual
the quality of being magnificent or splendid or grand	the quality of being magnificent or splendid or grand