achievable vs on offer

achievable

adj
  • Capable of being achieved, which either means possible or probable. 

  • Not linked to fate or outside influences. 

on offer

prep
  • For sale at a reduced price. 

  • Available to take; at hand; being offered or to be offered. 

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