attain vs seize upon

attain

verb
  • To come or arrive, by motion, growth, bodily exertion, or efforts toward a place, object, state, etc. 

  • To reach or come to, by progression or motion; to arrive at (a place, time, state, etc.). 

  • To gain (an object or desired result). 

seize upon

verb
  • To take up, embrace, enact, or turn eagerly to (a plan, idea, ideology, cause, practice, method, etc.); to grasp, understand, and accept quickly; to adopt wholeheartedly or vigorously. 

  • To grasp or take hold of (an object) suddenly, forcibly, or tightly. 

  • To take possession of or claim (an idea, person, event, etc.) as one's own; to assimilate, absorb, annex, co-opt. 

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