on the order of vs relating

on the order of

prep

  • In the manner of; along the lines of; like; of a similar kind to; more-or-less equivalent to. 

adv

  • Approximately. 

relating

noun

  • The act of relating, or forming or identifying relationships; relation. 

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