Answer: Verbal comunication and mass verbal comunication.
Explanation: The type of communication that primarily depends on the words you chose and the grammar is verbal communication, which is the type of communication that depends on sending a message by talking of writing.
An example of verbal communication may be a letter to your sister.
The mass verbal communication may also depend a lot in the words used and grammar, because this type of communication points to a large number of people, though as a homogeneous sample, and you need to be careful in the words you use and how you express them. (notice that mass verbal communication is a special case of verbal communication)
An example of mass verbal communication may be a communicate done by some university explaining some new student rules.
