When does something stink, when did you believe something stank, and when might it have stunk?
Do they historically mean the same thing? Yes. Do they have separate definitions in modern usage? Also yes.
Is it coleslaw or cold slaw? Deep-seated or deep-seeded? There are right answers, but the wrong ones seem kind of right in their own right.
One theory suggests that we call liquor 'spirits' because of alcohol’s association with one spirit in particular: the Holy Spirit. But there are other theories.
One historical definition of ‘whereas’ is ‘preamble.’ But that’s probably not the one you’re looking for.