clamour vs clamor

clamour and clamor both are nouns.

Word	Noun	Adjective	Verb	Adverb
clamour	Yes	No	Yes	No
clamor	Yes	No	Yes	No

As nouns, clamour and clamor are synonyms defined as:

Other synonyms of clamour include clamoring, clamouring, hue and cry.

As verbs, clamour and clamor are synonyms defined as:

As verbs, clamour and clamor are synonyms defined as:

clamour (noun)	clamor (noun)
loud and persistent outcry from many people	loud and persistent outcry from many people
	a loud harsh or strident noise

clamour (verb)	clamor (verb)
utter or proclaim insistently and noisily	utter or proclaim insistently and noisily
make loud demands	make loud demands
	compel someone to do something by insistent clamoring