noun

• (uncountable) Human conduct relative to social norms.
• (uncountable) The way a living creature behaves or acts generally.
• (uncountable, informal) A state of probation about one's conduct.
• (countable) An instance of the way a living creature behaves.
• (countable, uncountable, biology, psychology) Observable response produced by an organism.
• (uncountable) The way a device or system operates.