Rest in peace Rest in peace The phrase "Rest in peace", RIP, from Latin Requiescat in pace (, )) is sometimes used in traditional Christian services and prayers, such as in the Anglican, Lutheran, Methodist, and Roman Catholic denominations, sometimes to wish the soul of a decedent eternal rest and peace in Christ. It became ubiquitous on headstones in the 18th century, and is widely used today when mentioning someone's death. The phrase "dormit in pace" (English: "he sleeps in peace") was found in the catacombs of the early Christians and indicated that "they died in the peace of the Church, that is,
Phrase structure grammar Phrase structure grammar The term phrase structure grammar was originally introduced by Noam Chomsky as the term for grammar studied previously by Emil Post and Axel Thue (Post canonical systems). Some authors, however, reserve the term for more restricted grammars in the Chomsky hierarchy: context-sensitive grammars or context-free grammars. In a broader sense, phrase structure grammars are also known as "constituency grammars". The defining trait of phrase structure grammars is thus their adherence to the constituency relation, as opposed to the dependency relation of dependency grammars. In linguistics, phrase structure grammars are all those grammars that are based on the