The Japanese noun '項 (こう)' refers to a 'term' or 'clause' in a legal, mathematical, or logical context. It is often used in formal or technical writing to denote a specific part of a document, equation, or argument. For example: the terms of the contract「契約の項」(けいやくのこう). This term is important in the equation「この項は方程式で重要です」(このこうはほうていしきでじゅうようです). The word can also refer to a 'paragraph' or 'section' in a broader sense, depending on the context.