Speech-Language Pathology professionals (Speech-Language Pathologists (SLPs), or informally speech therapists) specialize in communication disorders as well as swallowing disorders. The main components of speech production include: phonation, the process of sound production; resonance; intonation, the variation of pitch; and voice, including aeromechanical components of respiration. The main components of language include: phonology, the manipulation of sound according to the rules of the language; morphology, the understanding and use of the minimal units of meaning; syntax, the grammar or principles and rules for constructing sentences in language; semantics, the interpretation of meaning from the signs or symbols of communication; and pragmatics, the social aspects of communication. Speech-Language Pathology is known by a variety of names in various countries around the world: Speech and Language Pathology is also known as logopaedics.
Contributions by Dolfrog, Slp1, and Sonjaaa.