Pain control helps improve the patient's quality of life. Oral and facial pain can affect eating, talking, and many other activities that involve the head, neck, mouth, and throat. Most patients with head and neck cancers have pain. The doctor may ask the patient to rate the pain using a rating system.
Learner's definition of COMPREHENSION. : ability to understand. [noncount] He has not the slightest comprehension of the subject. [=he does not understand the subject at all] The students showed excellent reading/language comprehension. The war caused suffering beyond comprehension. [=suffering that is impossible to imagine]
Language is a human system of communication that uses arbitrary signals, such as voice sounds, gestures, and/or written symbols. The study of language is called linguistics. Linguists (that is, specialists in the study of language) have defined language in many different ways. Here, chronologically arranged, are a few of those definitions. Language is a purely human and non-instinctive method of communicating ideas, emotions and desires by means of voluntarily produced symbols. (Edward Sapir, Language: An Introduction to the Study of Speech. Harcourt, Brace and Company, 1921)