simple past tense and past participle of common

present participle of common

A surname.

an antelope, Taurotragus oryx, of the African savannah

A medium-sized gull, Larus canus. / A butterfly of southern and eastern Asia (Cepora nerissa).

A year that is not a leap year.

(dated or historical) European Economic Community (A European trade group).

A noun that denotes any member, or all members, of a class; an ordinary noun such as "dog" or "city". In contrast, a proper noun is a single named entity such as "Socrates".

(UK politics) The lower house of the British Parliament; a session of the house. / (Canada, politics) The lower house of the Canadian Parliament.

(Canada slang, humorous euphemistic) An outhouse: an outbuilding used as a lavatory.