askew vs nonpositive

askew

adj

  • Untoward, unfavourable. 

  • Turned or twisted to one side. 

adv

  • Tilted to one side. 

nonpositive

adj

  • Not positive. 

  • Not positive; either zero or negative. 

noun

  • Any value that is not positive. 

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