onset vs outset

onset

noun
  • A setting about; a beginning. 

  • The initial portion of a syllable, preceding the syllable nucleus. 

  • The beginning of a musical note or other sound, in which the amplitude rises from zero to an initial peak. 

  • The initial phase of a disease or condition, in which symptoms first become apparent. 

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 onset and outset occurred in a corpus of books? (source: Google Ngram Viewer )