Salve, Latine loquentes! In studying Adler's text, a confusion arose in my understanding of the difference in the usage of these three words. The text gives three examples: Aut disce, aut discede. Vel imperatore vel milite me utimini. Sive casu sive consilio deorum. I still am not sure what that distinction between those three may be. Is aut used with verbs, and vel and sive only with nouns? And what about the enclitic -ve? Any feedback greatly appreciated.