The Science: Social Sciences: Linguistics: (Semantics Linguistics )

The philosophical and scientific study of meaning. Sometimes considered to be the same thing as semiotics, semology, or semasiology, which have overlapping meanings. This is a relatively new field of study, and several pioneers who largely worked independently of one another each felt the need to coin a new name for the new discipline, resulting in a variety of terms for the same subject. The word semantics is widely preferred as the name for the doctrine of meaning, particularly linguistic meaning. Semiotics denotes the study of sign-using behaviour in general. -- Based on entry Semantics Linguistics Social Sciences Science.

Semantics (from Ancient Greek: σημαντικός sēmantikos, "significant") is primarily the linguistic, and also philosophical study of meaning —in language, programming languages, formal logics, and semiotics. (wikipedia)