YOU TRIGGERED MY TRAP CARD!
I take offence to that!
Proper terminology establishes that you can't trigger a card, you can only trigger a Trigger or Trigger-like Effect. The latter if it's a trap card, of course, since Trigger Effects are specifically for monster cards.
On topic: I prefer content warning to trigger warning, because trigger warning has the implications of being about PTSD, and people can not want to read stuff about specific subjects for any number of reasons.
Also because people are assholes about trigger warnings for some reason.