Philosophy of Language, if there is such a thing. Words are taken as subject, and then are predicated. The same word can have any number of predicates, that is, the word does not contain its function. Another odd twist is that words can have multiple meanings--especially older words that have been in use for a time. We constantly add new words to the language, but we also add meanings to existing words, and not just by new functions, but to the word itself. It would be a mistake, most unscholarly, to interpret the Constitution by using new meanings or predicates that didn't exist when the Constitution was adopted.