Study the vocabulary about communication.
Nonverbal - being other than verbal communication;

Facial expression - a gesture executed with the facial muscles;

Sender - someone who transmits a message;

Communication - an exchange of information;

Verbal - involving words and language;

Receiver - the person who receives a message;

Oral communication - (language) communication by word of mouth;

Eye contact - contact that occurs when two people look directly at each other;

Ineffective - not producing an intended consequence;

Body language - communication via the movements or attitudes of the body;

Spoken word - a word that is spoken aloud;

Face-to-face - directly facing each other;

Two-way - involving two parts or elements.

Identify effective and ineffective verbal and nonverbal communication skills.

Could you tell that person was angry just by looking at his or her facial expression?

A manager may not be inclined to hire an employee with poor oral communication skills.

In the workplace, your posture and eye contact can send co-workers a message.

It can also sometimes be harder to understand spoken words over a telephone.