engross vs unhoard

engross

verb
  • To write (a document) in large, aesthetic, and legible lettering; to make a finalized copy of. 

  • To monopolize; to concentrate (something) in the single possession of someone, especially unfairly. 

  • To completely engage the attention of. 

unhoard

verb
  • To take or steal from a hoard; to pilfer. 

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