behavior vs behaviour

behavior and behaviour both are nouns.

Word	Noun	Adjective	Verb	Adverb
behavior	Yes	No	No	No
behaviour	Yes	No	No	No

As nouns, behavior and behaviour are synonyms defined as:

Other synonyms of behavior include conduct, doings.

As nouns, behavior and behaviour are synonyms defined as:

behavior and behaviour: (psychology) the aggregate of the responses or reactions or movements made by an organism in any situation

As nouns, behavior and behaviour are synonyms defined as:

behavior and behaviour: (behavioral attributes) the way a person behaves toward other people

Other synonyms of behavior include conduct, demeanor, demeanour, deportment.

As nouns, behavior and behaviour are synonyms defined as:

behavior and behaviour: the action or reaction of something (as a machine or substance) under specified circumstances

behavior (noun)	behaviour (noun)
manner of acting or controlling yourself	manner of acting or controlling yourself
(psychology) the aggregate of the responses or reactions or movements made by an organism in any situation	(psychology) the aggregate of the responses or reactions or movements made by an organism in any situation
(behavioral attributes) the way a person behaves toward other people	(behavioral attributes) the way a person behaves toward other people
the action or reaction of something (as a machine or substance) under specified circumstances	the action or reaction of something (as a machine or substance) under specified circumstances