congeneric vs on the order of

congeneric

adj

  • Of or pertaining to congeners (organisms of the same genus) 

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. 

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