sidelong vs sidewise

sidelong

adv
  • Towards the side; sideways. 

  • obliquely 

adj
  • Slanting or sloping; oblique. 

  • Indirect; suggestive; not straightforward. 

  • Directed to the side; sideways. 

  • Along the side of something. 

sidewise

adv
  • sideways 

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