common place is having a common interest, or have a common qulitay about each other, common beliefs. I think here is an explain of a common place that MADD. Mother agiasnt drunk driving. I think this beucase a gourp of mother come together and try to prevent this. They all have the same common interst to prevent durnk driving. Tryign to make the road a safe place and the have a common interst in it.