com·mon·al·ty 
(k
ŏm
ə-n
əl-t
ē)
n. pl. com·mon·al·ties 1. The common people as opposed to the upper classes. Also called commonality.
2. An incorporated body; a corporation.
3. An entire group: the commonalty of laypeople.
[Middle English communalte, from Old French comunalte, from Medieval Latin commūnālitās, from Late Latin commūnālis, of the community; see COMMUNAL.]