honor vs honour

honor and honour both are nouns.

Word	Noun	Adjective	Verb	Adverb
honor	Yes	No	Yes	No
honour	Yes	No	Yes	No

As nouns, honor and honour are synonyms defined as:

As nouns, honor and honour are synonyms defined as:

Other synonyms of honor include pureness, purity.

As nouns, honor and honour are synonyms defined as:

Other synonyms of honor include accolade, award, laurels.

As nouns, honor and honour are synonyms defined as:

Other synonyms of honor include laurels.

As verbs, honor and honour are synonyms defined as:

As verbs, honor and honour are synonyms defined as:

Other synonyms of honor include reward.

As verbs, honor and honour are synonyms defined as:

Other synonyms of honor include abide by, observe, respect.

honor (noun)	honour (noun)
the quality of being honorable and having a good name	the quality of being honorable and having a good name
a woman's virtue or chastity	a woman's virtue or chastity
a tangible symbol signifying approval or distinction	a tangible symbol signifying approval or distinction
the state of being honored	the state of being honored