PRODUCTION: The first cause (Q44) of beings. Creation (Q45), which is the mode of emanation of creatures from the first cause. The beginning of the duration (Q46) of creatures.
DISTINCTION: The distinction of things in general(Q47). The distinction of good and evil: evil (Q48) and its cause (Q49).
The distinction of creatures -- spiritual (or angels), corporeal, and man (which is both) -- is outlined below (QQ50-119).