Mass communication is said to be the dissemination of information to large heterogeneous audience, it can also be said to be has the distribution of idea to one audience in dispass I.e not all together in one place.

Mass communication differ from All other communication like group communication
where the information is only share within the group and it is not to be tell out for some reason sake, organization communications is also another form of communication which could be either upward to downward or downward to upward, the up to down system may be in form of management to the staff I.e how the pace move till it get down to the final staff which may probably be the gate man while the down to up system might be from the gate man to the CEO of that organization, there are different and many types of communications, besides we have explained some to enlighten us. Read the rest @ http://www.ibkemmanuel.com/2017/08/mass-communication-and-its-main-function.html?m=1[color=#000000][/color]