I understood completely well, I simply legitimately don't think they're that different of things. I think you're underplaying triggering.
They are both mental triggers. You literally "trigger" a seizure. I know a person who any mention of rape brings her to attempt self harm. It's genuinely not that different.
Except for the part where it's completely different, and you decided to play the, "doesn't understand what you mean" game first.
I like to think that if you had a good point, you'd be making it, and that it wouldn't involve a really desperate attempt to equivocate between "trigger words" and photosensitive epilepsy.
