Applications
Research in these areas reveals principles and systems which have many applications. The study of lexical (word) semantics and the conceptual distinctions implicit in the vocabulary of a language improves dictionaries which enable speakers of a language to extend their knowledge of its stock of words. It also improves materials which help those acquiring a second language through instruction. Studying the rules governing the composition of word meanings into sentence meanings and larger discourses allows us to build computer systems which can interact with their users in more naturalistic language. Investigating how our understanding of what is said is influenced by our individual and cultural assumptions and experience, which are much less visible than what is explicitly said, can help make us more aware and effective communicators. The result of all of these (sometimes very abstract) investigations is a deeper understanding and appreciation of the complexity and expressive elegance of particular languages and the uniquely human system of linguistic communication.