In communication studies, Paralanguage (or Vocalics) refers to the non-verbal vocal cues that accompany spoken words—such as voice tone, pitch, volume, pacing, pauses, rhythm, and inflection. Because paralanguage conveys emotional meaning and context without involving the actual semantic words spoken, it is categorized as a core dimension of Non-verbal Communication.

Communication is defined as the interactive two-way process by which two or more people exchange ideas, facts, feelings, and impressions in ways that each gains a common understanding of the message. In the context of agricultural extension, sharing information and knowledge between change agents and farmers is termed communication.

Principles of effective communication include clarity of message, brevity, completeness, two-way interaction (feedback), active listening, empathy, and simplicity of language. The use of 'Technical Jargon' (complex scientific terminology unfamiliar to rural audiences) is a major semantic noise and barrier to communication, NOT a principle of effective communication.