Checkmite
Skepticifimisticalationist
I don't follow your distinction. Could you provide another example of an object which has a life but isn't a life? That sounds like a serious misuse of language.
Yes. A couple of years ago I rather painfully excised a plantar's wart from the bottom of my foot. It consisted of human cells, and the cells were technically still "living" for a time after I removed it. I don't think you could call it "a life", though.
Similarly, someone could not call an amputated fingertip (for instance) "a life", although the tissue continues to live for a short period following amputation.