bare-arse vs bare-butt

bare-arse

adj

  • With the buttocks exposed, as for a spanking or a mooning. 

  • Stark naked. 

bare-butt

adj

  • With the buttocks exposed, as for a spanking or a mooning. 

  • Stark naked. 

How often have the words bare-arse and bare-butt occurred in a corpus of books? (source: Google Ngram Viewer )