inessential vs skippable

inessential

adj

  • Lacking essence or being. 

  • Not essential. 

noun

  • Something that is not essential 

skippable

adj

  • Not worth watching or doing; missable. 

  • Capable of being skipped. 

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