Identify The Variables Between Communication And Mass Communication?

Communication can be verbal or no-verbal. It is something which does not have a literal meaning. Any sign or symbol which is conveyed to the other person is communication.
While mass communication is done through media like newspaper, television or internet (some don't count it ). Through mass communication you can inform or educate people. Propaganda is also done by the 1st world country against Islam or terrorism or through media.
Read more about it. LINK

Communication is comprises of many types i.e intrapersonal, interpersonal, group communication and so on. And mass communication is done through mass media which differentiate it from the rest of the types.