A group of people born within a few years of each other is commonly referred to as a "cohort." This term is often used in Demographics and Social Sciences to analyze the behaviors, experiences, and characteristics of individuals within that specific age range. Cohorts can be defined by various criteria, such as year of birth or significant life events.
The process by which people learn the characteristics of their group is called socialization. It involves acquiring the beliefs, values, norms, and behaviors of one's culture or social group through interactions with others. Socialization helps individuals develop a sense of identity and belonging within their community.
A special group of people called scribes.
fundraising
The custom of marriage within a particular group is called "endogamy." Endogamy involves marrying within a specific social, cultural, or ethnic group, often to maintain cultural identity and social cohesion. This practice can help preserve traditions and reinforce group boundaries, as individuals marry others who share similar backgrounds, values, and beliefs.
subculture
The way groups of people conduct themselves is called group dynamics. It refers to the interactions, behaviors, and relationships within a group that influence its overall functioning.
a "clique"
A group with nine people is called a nonet.
A group of people is called a crowd
Secret Santa/Grab-Bag
a group or team of intelligent people are called wath
It's called a group.