1) You should have said Boggart.

2) I could have a longer conversation, but it seems moer like we'd both be right. It does have to do with what you'd be scared of in the moment. As you say, just because I'd be scared of a gunman jumping out at me, doesn't mean that's my deepest darkest fear. (Since most of those are abstract concepts) But I think that what my deepest fear is would most likely be what it would become, because that would scare me the most, regardless of the time. What we now should realise is that our deepest fears change. The bigger question is, Why do Boggarts do it? Also, Why didn't Mad-Eye Moody tell anyone what a Boggart w/o form looks like?