Hi, friends! This module discuss about language acquisition and language learning. The factors influencing the acquisition of a language, like the learner factors, environmental factors and infrastructural factors are dealt in detail. Acquisition and learning. Language acquisition is the process by which humans acquired the capacity to perceive and comprehend language. As well as to produce and use language. Acquisition is implicit and subconscious which take place in an informal situation. According to Stephen Christian 1985, language acquisition does not require extensive use of conscious grammatical rules and tedious drill. Acquisition requires meaningful interaction in the target language, natural communication in which speakers are connected, not with the form of their entrances but with the messages they are convenient and understanding. Language acquisition encompasses the development of four interdependent systems. Pragmatic: communicative use of language in a social context; Phonological: perception and production of sounds to form words; Semantics: processing of meaning and grammatical use of syntactic and morphological rules to combine words into meaningful sentences. The phonological and grammatical systems constitute the language form. The pragmatic system describes how language should be adapted to specific social situations in order to convey emotions and reinforce meaning. The term acquisition is used for L1 and the term learning is associated with L2. Children acquire language through a subconscious process during which they are unaware of grammatical rules, that is no deliberator for to learn the language. They pick up language in informal situations. Language acquisition is implicit, and effortless as meaningful communication occurs in natural environment. While communicating the message in the text is given more important rather than the form. ... connected through feedback or when they hear the correct usages. Later on, they can cut it themselves when they become masters of linguistic generalizations. They will be confident in using the language in the real life situations. Language learning is explicit and conscious and takes place in a formal situation. The rules of the language are taught directly and learning is the product of formal instruction.