Classification of Social Groups:
Social groups can be classified based on various factors. Here are some bases of classification:

1. Size:
- Small groups: Consist of a few individuals who interact closely.
- Large groups: Comprise a larger number of members and may have less intimate interactions.

2. Purpose:
- Primary groups: Formed for emotional support and personal relationships, like family and close friends.
- Secondary groups: Created for specific tasks or goals, such as work teams or professional organizations.

3. Duration:
- Temporary groups: Exist for a short period to achieve a specific objective.
- Permanent groups: Have a long-lasting presence and may continue for an extended period.

4. Composition:
- Homogeneous groups: Members share similar characteristics like age, gender, or interests.
- Heterogeneous groups: Members have diverse backgrounds and characteristics.

5. Structure:
- Formal groups: Have defined roles, rules, and hierarchies, like organizations or clubs.
- Informal groups: Are based on personal relationships and may lack official structure.

6. Affiliation:
- In-group: Members identify with the group and share a sense of belonging.
- Out-group: Individuals do not belong to or identify with the group.
By considering these bases of classification, we can better understand the dynamics and characteristics of different social groups in society.