What is OCG and TCG (lesson)

I am commonly asked "what is TCG and OCG? ". Instead of explaining it 10+ times, im going to make a lessson.
OCG = Official Card Game, applies mainly to Japan and a few Asian countries.
TCG = Trading Card Game, applies to everywhere else.

The big difference is that there are some cards in the OCG that aren't in the TCG and vice versa. Some rulings are also different (for example, Magical Dimension). However, the game is largely still the same. There are different ban lists, packs, etc. They just got TGU and laggia not too long ago, and we just got Fire Fist not too long ago. If you are still unsure PM me FunnyKarma76