Yes, indeed, welcome to you, soojin!
Peace be with you and yours.
Max, thank you for posting the roots of these two words. To strike, and to cast down. I'd been thinking that afflict implied a less deliberate act, and I suppose casting down is
somewhat less sure than striking. Though both striking and casting down are deliberate acts, it seems to me that if you cast something down, you are less sure of hitting your target than if you strike at it directly. (In the case of casting down, say, a written accusation on to a table, yes, you will hit the table, but your real target is the accused
person--who may get off scot-free.) If you cast seeds, some will land in the furrow, and some will not.
Let me see--can I afflict someone with something? If I have a contagious illness and pass it to another, have I afflicted them? Can kidnappers afflict their victims, in that syndrome that I can't think of the name of, where the victim becomes sympathetic to his or her captor? That is, I mean afflict them with loss of self, or self-esteem?