1.
Communal means relating to particular groups in a country or society.
Communal violence broke out in different parts of the country.
...inter-~ relations.
ADJ: ADJ n
2.
You use ~ to describe something that is shared by a group of people.
The inmates ate in a ~ dining room.
...~ ownership.
ADJ: usu ADJ n
~ly
Meals are taken ~ly in the dining room.
ADV: usu ADV after v