Final answer:
The question appears focused on taboos in English but references other tripartite categorizations in European languages, religions, and kabuki plays, which display the pattern of societal categories often being grouped in threes.
Step-by-step explanation:
The question seems to be related to the categories of taboos in English, but the provided information does not directly address English language taboos. Instead, the information discusses the divisions within the Indo-European language family and Christian religion in Europe, as well as categories of kabuki plays. To address the question based on the provided information, one could infer that divisions or categories in a societal context often come in threes, such as the three dominant language groups in Europe, which are Germanic, Romance, and Slavic. These coincide with the three main religious divisions, which are Protestant, Catholic, and Orthodox. Additionally, in the context of kabuki plays, there are also three main categories, which are the Jidaimono plays, the Sewamono plays, and the Shosagoto plays.