  The great kinds change and rest are problematic, because they are sometimes treated as categorial kinds—for instance, in the Parmenides change is divided into the species alteration and locomotion, and locomotion is further divided into spinning in the same place and moving from one place to another (Parmenides138b–c, cf.  Theaetetus 181c–d)—whereas sometimes they are listed along with other structural kinds, e.g., Parmenides 129d–e, 136a–c. (For alternative interpretations of change and rest in the Sophist, see Reeve 1985 and M. L. Gill 2012.) Whatever Plato ultimately thinks about the status of change and rest, in the second half of the Sophist his Stranger needs them to serve as opposed, mutually exclusive, consonant kinds and uses them repeatedly in his arguments marking off the five great kinds from one another. So we should construe them there as consonant/categorial kinds.