belabour vs roust

belabour

verb
  • To attack someone verbally. 

  • To labour about; labour over; work hard upon; ply diligently. 

  • To beat soundly; thump; beat someone. 

  • To discuss something unduly or repeatedly; to harp on. 

  • To explain or elaborate at length or in excessive detail; overelaborate. 

roust

verb
  • To harass, to treat in a rough way. 

  • to arrest 

  • to rout out of bed; to rouse 

  • to drive strongly 

noun
  • A strong tide or current, especially in a narrow channel. 

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