Speech-matters (praedicabilia) are
1. Kind (genus).
2. Hue (species).
3. Odds (differentia).
4. Selfihood (proprium).
5. Haplihood (accidens).
'Haplihood' for accident is good. The categories (p. 8):
Rede-matters (praedicamenta) are,
1. Thing or being (substantia).
2. Muchness (quantitas).
3. Suchness (qualitas).
4. Twin suchness (relatio).
5. Time-taking (actio).
6. Time-giving (passio).
7. Where (ubi).
8. When (quando).
9. Self-having (situs).
10. Self-having with otherwhat (habitus).
'Twin suchness' is not a particularly good choice for relatio; 'backdrawing' or 'to-ness' would probably be better. I'm also not sure why we get 'time-taking' rather than 'doing'; and while it's harder to find an alternative to 'time-giving', 'following' would probably be closer etymologically to passio. (The 'time', I think, is trying to tie the terms to change, though; if so, I think 'timing', which originally meant a happening, would be better for passio than time-giving, which sounds too active.) 'Lying' would be better than 'self-having' for situs and 'shoeing' would be better for habitus, although I like the parallel created between 'self-having' and 'self-having with otherwhat', which I think recognizes something genuine.
On syllogistic argument (p. 23):
Wrangling is mostly by syllogism, a three-stepped rede-ship, or a rede-ship of three thought-puttings.
1. The head or first step (major propositio).
2. The under or middle step (minor propositio), and
3. The upshot or last step (conclusio)....
And, of course, kinds of rede-ship are organized according to shape and to the muchness and suchness of their thought-puttings.