behaviour

n. manner of acting, conduct; any observable activity in humans or animals; reaction of a material when exposed to an outside force (also behavior)

Behavior or behaviour (see spelling differences) refers to the actions or reactions of an object or organism, usually in relation to the environment. Behavior can be conscious or unconscious, overt or covert, and voluntary or involuntary. In animals, behavior is controlled by the endocrine system and the nervous system. The complexity of the behavior of an organism is related to the complexity of its nervous system. Generally, organisms with complex nervous systems have a greater capacity to learn new responses and thus adjust their behavior. Human behavior (and that of other organisms and mechanisms) can be common, unusual, acceptable, or unacceptable. Humans evaluate the acceptability of behavior using social norms and regulate behavior by means of social control. In sociology, behavior is considered as having no meaning, being not directed at other people and thus is the most basic human action. Animal behavior is studied in comparative psychology, ethology, behavioral ecology and sociobiology.
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Noun
1. the action or reaction of something (as a machine or substance) under specified circumstances; "the behavior of small particles can be studied in experiments"
(synonym) behavior
(hypernym) action, activity, activeness
2. (behavioral attributes) the way a person behaves toward other people
(synonym) demeanor, demeanour, behavior, conduct, deportment
(hypernym) trait
(hyponym) manners
3. (psychology) the aggregate of the responses or reactions or movements made by an organism in any situation
(synonym) behavior
(hypernym) activity
(hyponym) territoriality
(classification) psychology, psychological science
4. manner of acting or conducting yourself
(synonym) behavior, conduct, doings
(hypernym) activity
(hyponym) aggression