Answer:
Primary groups; secondary groups
Explanation:
A Social group is the coming together of two or more people to have interaction, share common ideas and collectively have a sense of unity.
Social groups can be classified into two; primary and secondary.
The Primary social group is always a very small group in which its members share close, personal, enduring relationships. The main goal in this group is the coming days relationship the members share not necessarily to achieve any goal. Example of this grouo is family.
The Secondary social group is characterised by it being larger than the primary group, here members have a common goal they want to achieve not necessarily the relationship. This is a large goal that have an impersonal relationship with a common goal to achieve.