A cluster, crowd, or throng; an assemblage, either of persons or things, collected without any regular form or arrangement; as, a group of men or of trees; a group of isles.
Social psychology is the study of how people and groups interact. (Wikipedia)
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Social Psychology is a particular branch of Psychology - I would not say that it "differs" from Psychology, but rather that it is a specialization or type of Psychology. It focuses not only on groups...
social psychology bases its studies off of the interactions between people and how we work together. psychology includes a lot of things that goes on in our brains when we learn or react to different...