The similarity analysis feature in discourses, is an analytical tool of the IRAMUTEQ software. As a result, a tree diagram is generated which can be configured as a Venn diagram. However, the groups of words by similarity starting from a dominant word to the child words, using the co-occurrence principle. In discourse analysis, the semantic domains are checked and the derived words follow the same principle. In this case, in what aspects does IRAMUTEQ's similarity analysis differ from semantic domains in discourse analysis?