sidewards vs sideway

sidewards

adj

  • Toward a side. 

adv

  • Toward a side. 

sideway

adj

  • sidelong 

adv

  • sideways 

noun

  • A byway. 

  • A footpath near a road. 

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