cherub vs suckling

cherub

noun
  • A winged creature attending God, described by Pseudo-Dionysius the Areopagite (c. 5th–6th century) as the second highest order of angels, ranked above thrones and below seraphim; similar to a lamassu in the pre-exilic texts of the Hebrew Bible, more humanoid in later texts. 

  • A person, especially a child, seen as being particularly angelic or innocent. 

  • An artistic depiction of such a being, typically in the form of a winged child or a child's head with wings but no body. 

suckling

noun
  • An infant that is still being breastfed (being suckled) by its mother. 

  • A young mammal not yet weaned and still being fed milk by its mother. 

  • The act of suckling. 

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