Aggregate is defined as the collection of people which are present at a particular place at the same time. Example include people gathered in a church on a Sunday.
Category is defined as substances who are in a particular division as a result of certain shared features. Example include drink made from milk.
What is a Social group?
This is defined as two or more people who interact with one another with a sense of togetherness and share similar characteristics.
A good example of social group is fraternity etc.
Read more about Social group here https://brainly.com/question/12801521
