<p><strong>Noun</strong></p><ul><li>the kind of action or activity proper to a person, thing, or institution; the purpose for which something is designed or exists; role</li><li>any ceremonious public or social gathering or occasion</li><li>a factor related to or dependent upon other factors</li><li>Mathematics: a part cut off from a figure, especially a circular or spherical one</li><li>Zoology: any of the rings that compose the body of an annelid or arthropod</li><li>an object, as a machine part, having the form of a segment or sector of a circle</li><li>a unit of data in a database</li><li>a relationship in which an input value of a variable has a specifically calculated output value</li><li>Grammar: the grammatical role a linguistic form has or the position it occupies in a particular construction</li><li>Sociology: the contribution made by a sociocultural phenomenon to an ongoing social system</li></ul><p><strong>Verb (used without object)</strong></p><ul><li>to perform a specified action or activity; work; operate</li><li>to have or exercise a function; serve</li></ul>