Pain can be instructive if you are able to learn from it.
I think you mean didactic,It means instructive i.e. especially excessively.
The word that has the definition for providing information instructive is "educational."
instructive
padantic is not a word. pEdantic, however, is, and it means to be 'overly instructive or concerned with petty details; to be rigorous in education.'
Rapid means doing it very fast without stopping
There are LARGE CRYSTALS....
Rapid Eye Movement
Tachypnea (or "tachypnoea") (Greek: "rapid breathing") means rapid breathing
boom
no, because it happens slowly and the soil moves a few centimeters per year
It does not diminish quickly; it increases slowly.