Abstract : Following the same approach as for the term « anthropology », we have assembled on a single page the connotations of the term “communication”: the references found under each entry, the synonyms provided. Communication has a meaning, a direction. It seeks an interlocutor to establish a relationship which may turn into “communion”. It transmits an information, sometimes unilaterally. It is transport, passage, movement : outward transport through words or inner transport leading to a direct or mediated expression. It can be considered a system. Some people might prefer to call the balance of exchanges a relationship, a term which integrates the logical and emotional dimensions of human transactions.