rant vs understatement

rant

noun
  • A wild, emotional, and sometimes incoherent articulation. 

  • A criticism done by ranting. 

  • A type of dance step usually performed in clogs, and particularly (but not exclusively) associated with the English North West Morris tradition. The rant step consists of alternately bringing one foot across and in front of the other and striking the ground, with the other foot making a little hop. 

verb
  • To speak or shout at length in uncontrollable anger. 

  • To dance rant steps. 

  • To disseminate one's own opinions in a - typically - one-sided, strong manner. 

  • To criticize by ranting. 

understatement

noun
  • A figure of speech whereby something is made to seem smaller or less important than it actually is, either through phrasing or lack of emphasis, often for ironic effect. 

  • An incomplete disclosure that intentionally withholds relevant information. 

  • An instance of such phrasing or lack of emphasis. 

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