askew vs obvolute

askew

adj
  • Turned or twisted to one side. 

  • Untoward, unfavourable. 

adv
  • Tilted to one side. 

obvolute

adj
  • overlapping; contorted; convoluted 

  • Having two opposite leaves, each with one edge overlapping the nearest edge of the other. 

  • Having a circle of several leaves or petals which overlap in that manner. 

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