The basic social unit among the Taaw't-Bato of Singnapan is the "ka-asawan" (marriage group). This extends from the basic couple, man and woman, to the more complex arrangements of a compound and extended family grouping. The "ka-asawahan" or households units are further grouped into larger associations called "bulun-bulun", which literally means "gathering". These multi-household bands are physically bounded in the terms of areas of habitation. Each "bulun-bulun" ordinarily occupies a single cave for residence, or a single house complex in the swidden area. One thing clear is that membership in a "bulun-bulun" is characterized by the ecosystem of sharing through different types of social and material exchanges, a prominent example being the sharing of food.