coarse vs semitropical

coarse

adj
  • Composed of large particles. 

  • Lacking refinement, taste or delicacy. 

  • Of inferior quality. 

  • With a rough texture; not smooth. 

semitropical

adj
  • Intermediate between temperate and tropical. 

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