allow vs shackle

allow

verb
  • To not bar or obstruct. 

  • To render physically possible. 

  • To grant, give, admit, accord, afford, or yield; to let one have. 

  • To acknowledge; to accept as true; to concede; to accede to an opinion. 

  • To grant license to; to permit; to consent to. 

  • To grant (something) as a deduction or an addition; especially to abate or deduct. 

  • To take into account by making an allowance. 

  • To decide (a request) in favour of the party who raised it; to grant victory to a party regarding (a request). 

shackle

verb
  • To restrain using shackles; to place in shackles. 

  • To render immobile or incapable; to inhibit the progress or abilities of. 

  • To shake, rattle. 

noun
  • A link for connecting railroad cars; a drawlink or draglink. 

  • A restraint on one's action, activity, or progress. 

  • A length of cable or chain equal to 12+¹⁄₂ fathoms or 75 feet, or later to 15 fathoms. 

  • A U-shaped piece of metal secured with a pin or bolt across the opening, or a hinged metal loop secured with a quick-release locking pin mechanism. 

  • A fetter-like band worn as an ornament. 

  • A restraint fit over a human or animal appendage, such as a wrist, ankle or finger; normally used in pairs joined by a chain. 

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