restless vs strained

restless

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

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

  • Not allowing or affording rest. 

  • Deprived of rest or sleep. 

strained

adj
  • Under tension; tense. 

  • Forced through a strainer. 

  • Not natural or spontaneous but done with effort 

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