Sociology (noun)

1. The study of society, social institutions, and social relationships.
2. The study of human social behavior and its origins, development, organizations, and institutions.

Origin:

Early 19th century: from french sociologie, from sociologique, from sociologie (see sociology).

Examples:

1. He studied sociology in college.
2. She was interested in the sociology of religion.
3. He was a professor of sociology.
4. She was doing research in sociology.
5. He was reading a book on sociology.