astringent vs groaning

astringent

adj
  • Extremely sour, bitter. 

  • Sharp, caustic, severe. 

  • Causing a dry or puckering mouthfeel; characteristic of foods with high tannin content, such as certain kinds of berries and citrus fruits. 

  • Having the effect of drawing tissue together; styptic. 

noun
  • A substance which draws tissue together, thus restricting the flow of blood. 

groaning

adj
  • That groans. 

  • Heavily laden, as if to creak under the strain. 

noun
  • A low sound associated with extended suffering, sorrow, and toil. 

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