their meanings seem to be well-understood
overloaded to mean "awaiting feedback from submitter" and "awaiting feedback from maintainer"
overloaded to mean "incoming/unclassified", "incoming/classified", "feedback received from submitter", "approved by code maintainer", and "committer has looked at this"
this seems to be overloaded to mean "committer agrees that this is a specific problem" or "bugmeister thinks this is at least a valid PR"
this seems to be a little bit overloaded to mean "we won't fix this right now" or "we won't ever fix this" or "no consensus seems possible on this issue"