This document defines key terms related to language acquisition and teaching approaches. It provides definitions for acquisition vs learning, approach, digital literacy vs literacy, English as a foreign language (EFL), language acquisition device (LAD), multiple intelligences theory, phonics, target language vs mother tongue, critical period hypothesis, total physical response (TPR), and zone of proximal development (ZPD). The definitions cover topics such as the differences between acquisition and learning, key language teaching approaches, theories of intelligence and language development, and methods for teaching literacy, pronunciation, and grammar.