impediment vs stricture

impediment

noun
  • A hindrance; that which impedes or obstructs progress. 

  • Baggage, especially that of an army; impedimenta. 

  • A disability, especially one affecting the hearing or speech. 

stricture

noun
  • A rule restricting behaviour or action. 

  • The degree of contact, in consonants. 

  • Abnormal narrowing of a canal or duct in the body. 

  • A general state of restrictiveness on behavior, action, or ideology. 

  • A sternly critical remark or review. 

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