ass cheeks vs nates

ass cheeks

noun

  • Buttocks. 

nates

noun

  • The buttocks. 

  • The umbones of a bivalve shell. 

  • The two anterior of the four lobes on the dorsal side of the midbrain of most mammals; the anterior optic lobes. 

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