Ontological categories and semantic relationships (Semantic relationships in knowledge organization – update 2)^†

The ideas in this note on Ontological Categories arose while developing a Tamil-English bilingual thesaurus for classical Tamil studies. Therefore, they are based on concepts, categories, meanings, and relationships derived from some of the sources used in building the corpus of terms for the bilingual thesaurus -- the University of Madras Tamil Lexicon, 1926–1939 (reprint 1982), v. I-VI, print edition and online version of the University of Chicago [Dictionaries of South-Asian Languages] (1,2). This online version gives the descriptor terms in ASCII format as well as in Unicode compliant Tamil script. The transliteration of Tamil terms used in this note is that followed by the University of Cologne online searchable version of the Tamil Lexicon (3).