Social Sciences don't intend to be only about the other. Sociology concerns about the problems of "our" society - the modern western society -, not just looking at what is exotic. What is becoming closer and closer is method. Nowadays we can barely distinguish methods used by one and another.
Dear Carol, I think there are too many research topic are cutting across Anthro and sociology . It is very difficult when we try to build a research model just based on those earlier research in our own field , very often , we need to look for some new theories from other faculties .
Sociology is the study of society and social relations. Sociology focuses on humans in groups and the structure of the groups in terms of such social facts as status (a position within a social network with rights and responsibilities aside to the position) and individual roles (the behaviors that individuals and social groups carry out as a function of their status in the network).
Anthropology is the study of MAN in its original 4 field approach developed in America under Boas. It included the historical and biological nature of human evolution, the study of contemporary human societies, especially non-western, and the languages. The dominant sub-field is cultural anthropology which focuses on the role of culture and cultural differences in human society.
The British have developed a more sociological approach to the subject and anthropology is most often described as social anthropology. Physical/biological anthropology is some times treated as a separate discipline.
As the social and behavioral sciences have evolved the differences between disciplines become more and more fragile.