baby of the family vs pooper

baby of the family

noun
  • The youngest member of an immediate family. 

  • A member of an immediate family who behaves as, or is treated as though they were the youngest member of a family. 

  • An adult member of an immediate family who is treated by others in the family, especially the parents, as though they were a child. 

pooper

noun
  • An infant. 

  • A selection in a slot machine game that ends the picking bonus. 

  • One who poops; or, poops well. 

  • One who poops out on an activity; one who dampens the mood by lack of participation or negative attitude. 

  • The anus; often in reference to anal intercourse. 

  • The toilet. 

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