Explanation : Horizontal communication is the communication that flows laterally between persons at
the same level. Though the teacher usually
is higher than the taught in rank, during an
animated discussion between the two, latter rises to an equal level and this difference gets blurred.
Mechanical communication involves
machine-to-machine (M2M) networks;
Linear communication is one-sided,
e.g., from the teacher to the taught; and,
Categorical communication allows the
receiver to distinguish between sounds, no
matter how varied or similar they may be.