blend vs unify

blend

verb
  • To mingle; to mix; to unite intimately; to pass or shade insensibly into each other. 

  • To be mingled or mixed. 

noun
  • A mixture of two or more things. 

  • A word formed by combining two other words; a grammatical contamination, portmanteau word. 

unify

verb
  • Cause to become one; make into a unit; consolidate; merge; combine. 

  • Become one. 

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