In my example of the trigger it would've been a trigger within the game mechanics and nothing the player knows, so he just walks around and the floor breaks. Judging by your definition it would've been suspense.
You made alot of good points though, and gave me somethings to think about.

I guess combining horror and suspense is an option aswell. The reason I'm asking is this article in Gamasutra.
Quote from the article:

There needs to be video games that provide the same sort of experiences for the medium as Schindler's List, The Shawshank Redemption, etc. do for movies.

Reading that made we want to dig deeper into the subject, and actually not just limited to suspense but emotions.
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I then recommend you to play Pathologic. It's a really hard, and really difficult to play game, but it's incredible.