furnish vs obstruct

furnish

verb
  • To supply or give (something). 

  • To provide a place with furniture, or other equipment. 

  • To supply (somebody) with something. 

noun
  • Material used to create an engineered product. 

obstruct

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

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

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

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