obstructive vs privative

obstructive

adj

  • Causing obstructions. 

noun

  • One who obstructs something. 

privative

adj

  • causing privation; depriving 

  • consisting in the absence of something; negative 

  • indicating the absence of something 

noun

  • something that causes privation or indicates an absence 

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