Demographic
Part of speech: adjective
Definition: Of or pertaining to demography.
Part of speech: noun
Definition: A demographic criterion: a characteristic used to classify people for statistical purposes, such as age, race, or gender. A demographic group: a collection of people sharing a value for a certain demographic criterion. An individual person's characteristic, encoded for the purposes of statistical analysis.
Example sentence: It's not unfair, I think, to describe boxers as a demographic little given to literary entanglement. In general, with exceptions, they prefer movies.
Sociology
Part of speech: noun
Definition: The study of society, human social interaction, and the rules and processes that bind and separate people not only as individuals, but as members of associations, groups, and institutions
Example sentence: Don't settle; don't compromise. Freeze your eggs, get your sociology doctorate, worry more about war and pestilence and the incredible inequality of geographical birth than finding your soulmate.