pent vs tapered

pent

adj

  • Confined in, or as if in, a pen; imprisoned. 

noun

  • A pentatonic scale. 

  • A pentacle or pentagram. 

  • Confinement; concealment. 

tapered

adj

  • Narrowing gradually towards a point. 

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