The article is dedicated to the study of the complex concept WORD / LANGUAGE / SPEECH and its medial zone in the naïve picture of the world within a framework of a new scientific direction – dual linguistics: scientific and naive interpretation of language in the English lexicography. The study of the verbalized concept involves, first of all, the formation of its nominative field, i.e. the collection and structuring into a single whole of all nominative units that denote core concepts, together with their vocabulary definitions. The factual material obtained in this way allows a careful analysis of the etymology and semantics of all collected lexical items. The complex concept WORD / LANGUAGE / SPEECH, which is verbalized by nominative units extracted from English general lexicographic sources, is considered. The nuclear zone of the naïve picture of the world counts three lexemes (which together contain 42 sememes), among which 161 semes have been filtered by means of seme analysis method. The most common semanteme, present in all nuclear lexemes, is the idea of the bilateral nature of any communicative unit. All of the nuclear zone lexemes in the primary dictionary position contain the seme, which emphasizes the unity of content and form of the phenomena under consideration. The medial zone of the nominative field of the verbalized WORD / LANGUAGE / SPEECH complex concept is many times bigger and more variable in comparison with the nuclear zone. It includes more than 700 lexical units with semantic components language, speech, communication. According to the thematic principle, the collected material was divided into 6 sectors: communication; units of language, speech; discourse, text; phonetical, grammatical and stylistic phenomena; language / dialect / slang, speaker; linguistics. The thematic sector language / dialect / slang, the speaker comprises 40 vocabulary units, which nominate: a) the concept of language as a means of communication and its territorial, social and professional subtypes, and b) the concept of a person who speaks / does not speak a language or uses the language.