different between stepgrandfather vs stepgrandmother

English

From step- +? grandfather.

stepgrandfather (plural stepgrandfathers)

The stepfather of one's mother or father and the husband of one's grandmother, and not one's biological grandfather, especially following the divorce of one's grandparents or the death of one's grandfather.
The father of one's stepmother or stepfather.

step- +? grandmother

stepgrandmother (plural stepgrandmothers)

The stepmother of one's father or mother and the wife of one's grandfather, usually a woman that one's grandfather marries after the divorce of one's grandparents or the death of one's grandmother.
The mother of one's stepmother or stepfather.

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