dank vs tropic

dank

adj
  • Dark, damp and humid. 

  • Moist and sticky, (by extension) highly potent. 

  • Great, awesome. 

noun
  • Strong, high-quality cannabis. 

  • A small silver coin formerly used in Persia. 

  • Moisture; humidity; water. 

tropic

adj
  • Hot and humid. 

  • Of, or relating to the tropics; tropical. 

  • Having the quality of indirectly inducing a biological or chemical change in a system or substrate. 

  • Pertaining to, involving, or of the nature of a trope or tropes. 

noun
  • Either of the two parallels of latitude 23°27′ north and south of the equator; the farthest points at which the sun can be directly overhead; the boundaries of the torrid zone or tropics. 

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