1. is something that is believed to persist after one's body perishes. After death, a may go to Heaven or Hell, or it may float around on earth (Hitodama), or it may be drained or eaten by monsters in fantasy works. It's a rather "occult" term. To refer to _mind_ as opposed to _body_ in academic and/or serious writings, is usually preferred.
2. also metaphorically refers to the essential part of something, someone's essential mindset. (the spirit of a lion) (spirit of _samurai_ )
3. A can sometimes stay inside artistic works, speeches, etc. (soulless novel) (soulful vocal)
So putting other very rare usages aside, Japanese can basically be translated either as _spirit_ or _soul_. Dictionaries say English _soul_ sometimes refer to _heart_ or even _person_ (eg "a kind soul"), but that's not possible with .