arrest vs obstruct

arrest

verb
  • To catch the attention of. 

  • To seize (someone) with the authority of the law; to take into legal custody. 

  • To stop or slow (a process, course etc.). 

  • To undergo cardiac arrest. 

noun
  • The judicial detention of a ship to secure a financial claim against its operators. 

  • A device to physically arrest motion. 

  • The condition of being stopped, standstill. 

  • A check, stop, an act or instance of arresting something. 

  • A scurfiness of the back part of the hind leg of a horse 

  • The process of arresting a criminal, suspect etc. 

  • A confinement, detention, as after an arrest. 

obstruct

verb
  • To get in the way of so as to hide from sight. 

  • To impede, retard, or interfere with; hinder. 

  • To block or fill (a passage) with obstacles or an obstacle. See synonyms at block. 

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