The description and analysis of contemporary cultures, which is based almost entirely on in-depth fieldwork. The formulating of generalizations about culture and the drawing of comparisons are components of ethnography. It is part of the subdiscipline of cultural anthropology. An important technique is participant observation, whereby the anthropologist lives in the society being studied. Ethnography provides data to archaeologists through analogy and homology. An ethnographic study is that of the cultural characteristics of a particular ethnic or social group.