In this article we will talk about the factors that distinguish the meanings of homonym words within a category of words, mathematical models, which are one of the important functions of the Uzbek language semantic analyzer to be created. In solving this problem, we turn directly to the theory of probability. In this article we will talk about the questions of determining the words that come to mind with the word homonym in the text given for semantic analysis, the calculation of the probability of this with this word.