brachylogy vs laconism

brachylogy

noun
  • Concise speech; laconism. 

  • Any of several forms of omission of words, including the omission of an understood part of a phrase, as, the omission of "good" from "(good) morning!" 

laconism

noun
  • Extreme brevity in expression. 

  • A very or notably brief expression. 

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