Group delay and phase delay - In signal processing, group delay is a measure of the time delay of the amplitude envelopes of the various sinusoidal components of a signal through a device under test, and is a function of fre...
Group (stratigraphy), in geology, a lithostratigraphical unit; a group consists of formations, or rock strata
Peer group - A peer group is both a social group and a primary group of people who, through homophily, share similarities such as age, background, and social status.
Working group - A working group is an ad hoc group of subject-matter experts working together to achieve specified goals.
Interest group - Advocacy groups (also known as pressure groups, lobby groups, campaign groups, interest groups, or special interest groups) use various forms of advocacy to influen...
Group action (sociology) - In sociology, a group action is a situation in which a large number of agents take action simultaneously in order to achieve a common goal; their actions are usually coordinated.
Group affective tone - Group affective tone represents the consistent or homogeneous affective reactions within a group.
Group attribution error - The group attribution error is an attribution bias analogous to the fundamental attribution error in that it refers to people's tendency to believe either (1) that the characteristics of an indi...
Group behaviour - Group behaviour (or group behavior) in sociology refers to the situations where people interact in large or small groups.
Group cohesiveness - Group cohesiveness is the extent to which the members of a social group are loyal to one another and identify with the group.
Group conflict - Group conflict, or hostilities between different groups, is a pervasive feature common to all levels of social organization (e.g., sports teams, ethnic groups, nations, religions, gangs).
Group development - The goal of most research on group development is to learn why and how small groups change over time.
Group dynamics - Group dynamics is a system of behaviors and psychological processes occurring within a social group (intragroup dynamics), or between social groups (intergroup dynamics).
Group polarization - In social psychology, group polarization refers to the tendency for groups to make decisions that are more extreme than the initial inclination of its members.
Group-serving bias - In-group favoritism, sometimes known as in-group–out-group bias, in-group bias, or intergroup bias, refers to a pattern of favoring members of one’s in-group over out-group members.
Cult - A cult is a religious group or other organization with deviant and novel beliefs and practices.
Sect - A sect is a subgroup of a religious, political or philosophical belief system, usually an offshoot of a larger religious group.
Ethnic group - Ethnicity or ethnic group is a social group of people who identify with each other based on common ancestral, social, cultural, or national experience.
Nationality - Citizenship denotes the link between a person and a state or an association of states.
Insider - An insider is a member of any group of people of limited number and generally restricted access.
Cultural group - The nominal term cultural group generally refers to a self-defined group of people who share a commonality of sociological, ethnographic or regional background experiences which identify them as...
Mainstream - Mainstream is the common current thought of the majority.
Subculture - In sociology, and cultural studies, a subculture is a group of people within a culture that differentiates themselves from the larger culture to which they belong.
Gang - A gang is a group of recurrently associating individuals or close friends with identifiable leadership and internal organization, identifying with or claiming control over territory in a communi...
Immigrant - Immigration is the movement of people into another country or region to which they are not native in order to settle there.
Clan - A clan is a group of people united by actual or perceived kinship and descent.
Family - In human context, a family (from familia) is a group of people affiliated by consanguinity (by recognized birth), affinity (by marriage), or co-residence/shared consumption (see Nurture kinship).
Fan - A fan, sometimes also called aficionado or supporter, is a person who is enthusiastically devoted to something, such as a band, a sports team or entertainer.
Supporter - In heraldry, supporters are figures usually placed on either side of the shield and depicted holding it up.
Opposition - In politics, the opposition comprises one or more political parties or other organized groups that are opposed to the government, party or group in political control of a city, region, state or ...
Boy band - A boy band (or boyband) is loosely defined as a vocal group consisting of young male singers, usually in their teenage years or in their twenties at the time of formation.
Girl group - A girl group is a popular music act featuring several young female singers who generally harmonise together.
Groupies - The term groupie is derived from group, in reference to a musical group, but the word is also used in a more general sense, especially in casual conversation, to mean a particular kind of female...