The problem of relations between the lexical meaning of a word and its concept

The article states that there are ambiguous relations between the lexical meaning and its concept. Sometimes they coincide because the concept is the basis of the word meaning. For example, in the dictionary «an island» is interpreted as «an area of land, surrounded by water at any side». It is a concept and at the same time it is the lexical meaning of the word. However, the words not only express the concept by their names, but they also point at real objects and phenomena. That’s why there can be the meaning of the word in the language, and sometimes it diverges with the scientific concept (e.g., common meaning of the sun and moon, and the scientific concept of them, which is fixed in terms and is constantly deepening as the science develops). A young person can acquire the concept of umbellate plants, that all flowers in its inflorescence are almost in the same plane, but in the garden bed he won ’t distinguish parsley from carrot, i. e. he doesn’t know denotations specifically. The article also expresses the idea that in the meanings of polisemic terms and in root morphemes of related words, the generalized representations of objects and phenomena are expressed but not their distinct concepts (e.g., representation expressed in the root ul’ (street) in the related words ulitsa (street), pereulok (lane), ulei (beehive).