blockage vs direction

blockage

noun
  • Synonym of constipation (“impairment of feces passage”). 

  • The thing that is the cause of such a state, blocking a passage. 

  • The state or condition of being blocked. 

  • Synonym of thrombosis, synonym of thromboembolism, or synonym of embolism. 

direction

noun
  • Guidance, instruction. 

  • A general trend for future action. 

  • A theoretical line (physically or mentally) followed from a point of origin or towards a destination. May be relative (e.g. up, left, outbound, dorsal), geographical (e.g. north), rotational (e.g. clockwise), or with respect to an object or location (e.g. toward Boston). 

  • The work of the director in cinema or theater; the skill of directing a film, play etc. 

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