This document provides information about language and its functions from a presentation given by Aditi Bhushan. It discusses language as a medium for social participation and problem solving. It also outlines the four fundamentals of language as listening, reading, speaking and writing. The document then describes the components of language development, including phonology, semantics, grammar and pragmatics. Finally, it lists several key characteristics of language such as it being a means of communication, arbitrary, a system of symbols, always changing, learnt, follows conventions and evolves, made up of habits, based on common cultural experience, and unique.