onfall vs outset

onfall

noun
  • A falling on or upon; an attack, onset, or assault. 

  • The fall of the evening. 

  • A fall of rain or snow. 

verb
  • To fall on or upon. 

  • To assault, attack. 

outset

noun
  • Onset; the beginning or initial stage of something. 

verb
  • To cause (a design element) to extend around the outside of something else, the opposite of being inset. 

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