This paper presents a semantic/conceptual analysis of the concepts of communication and language, as represented in the lexicon of everyday English. Section 1 gives a brief orientation to the method to be employed, the Natural Semantic Metalanguage (NSM) approach originated by Anna Wierzbicka. In the main body of the paper, I propose semantic explications for several senses of the English words communicate, communication and language, supporting these explications by reference to naturally occurring data, and, in the case of polysemy, by reference to distinctive grammatical or phraseological properties of the polysemic meanings. The paper closes with observations on how the differing semantics of the 'communication concept' and the 'language concept' may contribute to the differing orientations of linguistics and communication studies.