building terraces increases the amount of terraces in an environment
terrace is row. terraced_house has more_than_one_level terrace is bench. terraced_house has many_levels terraced_house has not many_levels apartments has balconys terraced_house has not more_than_one_level terrace is not part_of_house. terrace is form_of_decking. terrace is part_of_house.