big-ass vs muscular

big-ass

adj
  • Very large, expansive, fat, impressive, muscular, intimidating, or important. 

muscular

adj
  • Having large, well-developed muscles. 

  • Robust, strong. 

  • Full-bodied 

  • Of, relating to, or connected with muscles. 

  • Brawny, thewy, having strength. 

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