Ghost/Hypo/Orange Ghost

So, after reading many threads on the subject I still don't see a clear answer.
Is ghost or hypo the same as an orange ghost?
If they are different, are they compatible(for breeding) or will you just get hets? I read that some are and others aren't- why is this?
Are they compatible based on the dominant morph or the original ghost line?

Ghost / orange ghost / hypo are all typically used to name the same gene. It is recessive.

There are other "ghost" lines, such as yellow and green. I can't remember which are compatible with which, I only play with orange ghost/hypo.

I concur, ghost/hypo/orange ghost are all used interchangeably. The couple lines that weren't compatible (green ghost and yellow ghost) no one ever works with anymore for that exact reason.

Desert ghosts are a separate line and incompatible with normal hypo/ghost/orange ghost, but those are still being worked with because of how drastically different they are. No one is ever going to sell a desert ghost as anything other than a desert ghost though, so you really don't need to worry about getting the two mixed up.

Thanks for the feedback!