Communication barriers are termed so because they:

Communication barriers are referred to as such because they impede the effective exchange of information. When communication barriers are present, they disrupt the flow of messages between individuals or groups, causing misunderstandings and confusion. This interference can stem from various sources such as language differences, cultural misunderstandings, emotional biases, or environmental factors.

When communication is impeded, it restricts the ability of individuals to express their ideas clearly and to understand others, leading to a breakdown in the exchange that is essential for collaboration and problem-solving. Therefore, recognizing and addressing these barriers is crucial in agricultural extension and other fields to enhance communication effectiveness and ensure that information is shared adequately.

In contrast, the other terms like "facilitates," "accelerate," and "hasten" suggest a positive or enhancing influence on communication, which is not the role of communication barriers. These words imply that communication is made easier or faster, which is contrary to the concept of barriers that obstruct and slow down effective interpersonal exchanges.