Final answer:
A social group in sociology refers to any collection of at least two people who regularly interact and have a sense of shared identity. This concept is foundational to understanding how individuals coalesce into larger communities and societies.
Step-by-step explanation:
Two or more people who interact and share a common identity are referred to as a social group in sociology. Social groups are defined by the regular interactions among individuals and the shared sense of identity they have as part of the group. These interactions and shared identities can be based on various factors such as wealth, income, education, occupation, cultural practices, or hobbies. Moreover, sociologists define a society as a larger ensemble of people who inhabit a specific area, share a culture, and interact with each other. This can range from small communities like neighborhoods up to entire countries. In contrast, a family is a type of social group recognized by societal norms and is characterized by blood, marriage, or adoption ties, forming both an emotional connection and an economic unit within a society.