Logopedist, also known as speech therapist or speech pathologist, is a professional who specializes in the diagnosis and treatment of speech and language disorders. Phoniatrician is another synonym for logopedist that refers to a physician who specializes in the treatment of speech and voice disorders. Audiologist is a healthcare professional who works with hearing impairments and balance disorders, and they may also be involved in the treatment of speech and language disorders. Language therapist is another term that is commonly used for speech therapist. Speech-language clinician, speech correctionist, and speech clinician are other synonyms used in the field. Whatever the synonym, the goal is always to improve a person's ability to effectively and efficiently communicate.