classify vs line up

classify

verb
  • To make classy 

  • to declare something a secret, especially a government secret 

  • to identify by or divide into classes; to categorize 

line up

verb
  • To put things in a line 

  • to put in alignment; to put in correct adjustment for smooth running 

  • To start a game in a certain position on the playing field. 

  • To make arrangements for an event. 

  • To support a group or movement. 

  • To get into a line. 

  • To agree or correspond. 

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