depress vs quiver

depress

verb
  • To press down. 

  • To cause a depression or a decrease in parts of the economy. 

  • To make depressed, sad or bored. 

  • To bring down or humble; to abase (pride, etc.). 

  • To reduce (an equation) in a lower degree. 

quiver

verb
  • To shake or move with slight and tremulous motion. 

noun
  • A multidigraph. 

  • A ready storage location for figurative tools or weapons. 

  • A container for arrows, crossbow bolts or darts, such as those fired from a bow, crossbow or blowgun. 

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