clamoring vs clamouring

clamoring and clamouring both are nouns.

Word	Noun	Adjective	Verb	Adverb
clamoring	Yes	No	No	No
clamouring	Yes	No	No	No

As nouns, clamoring and clamouring are synonyms defined as:

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

clamoring (noun)	clamouring (noun)
loud and persistent outcry from many people	loud and persistent outcry from many people