This article presents the continuation of work on a consistent formal grammatical and ontological description of the model of the Tibetan compounds system, developed and used for automatic syntactic and semantic analysis of Tibetan texts, on the material of a hand-verified corpus. The study of new texts made it possible to develop and correct classes, created for different types of compounds in the formal grammar. New types of compounds were also discovered. In addition, the current research contains the description of the external semantic relations between concepts denoted by compounds components and the overall meaning of a compound.