describe vs designate

describe

verb
  • To represent by drawing; to draw a plan of; to delineate; to trace or mark out. 

  • To give rise to a geometrical structure. 

  • To represent in words. 

  • To introduce a new taxon to science by explaining its characteristics and particularly how it differs from other taxa. 

designate

verb
  • To mark out and make known; to point out; to indicate; to show; to distinguish by marks or description 

  • To indicate or set apart for a purpose or duty; — with to or for; to designate an officer for or to the command of a post or station. 

  • To call by a distinctive title; to name. 

adj
  • Designated; appointed; chosen. 

  • Used after a role title to indicate that the person has been selected but has yet to take up the role. 

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