off and on vs restless

off and on

adv
  • On different tacks, now toward, and now away from, the land. 

restless

adj
  • Not satisfied to be at rest or in peace; averse to repose; eager for change; discontented. 

  • Without rest; unable to be still or quiet; uneasy; continually moving. 

  • Not allowing or affording rest. 

  • Deprived of rest or sleep. 

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