cummer vs godsib

cummer

noun
  • The relationship of a godmother to the other godparents (godsibs or gossips), and the legal parents, of a child. 

  • A female companion or intimate (of another woman). 

  • Lass, the feminine equivalent of fellow. 

  • One who cums or climaxes. 

godsib

noun
  • One's sibling or kin via a godfamily tie: one's or one's child's godparent, or one's godchild's parent, or one's godparent's child. 

How often have the words cummer and godsib occurred in a corpus of books? (source: Google Ngram Viewer )