An interdisciplinary field of study that identifies, investigates, and offers solutions to language-related real-life problems. This branch of Linguistics has been associated with Teachers of English to Speakers of Other Languages , Teaching English as a Foreign Language, Teaching English as a Second Language and generally answers how can languages be learnt and taught, what social factors affect language learning, how can technology be used to contribute to the effectiveness of language teaching/learning, what are the related problems associated with language disorders and can this be prevented.