adverb vs fetter

adverb

verb
  • To make into or become an adverb. 

noun
  • In the Raku programming language, a named parameter that modifies the behavior of a routine. 

  • A word that modifies a verb, adjective, other adverbs, or various other types of words, phrases, or clauses. (modifying a verb) 

  • A word that modifies a verb, adjective, other adverbs, or various other types of words, phrases, or clauses. 

fetter

verb
  • To restrain or impede; to hamper. 

  • To shackle or bind up with fetters. 

noun
  • A chain or similar object used to bind a person or animal – often by its legs (usually in plural). 

  • Anything that restricts or restrains. 

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