matching vs on the order of

matching

adj
  • The same as another; sharing the same design. 

noun
  • A set of independent edges in a given graph, i.e. a set of edges which do not intersect, such that pairs of vertices are "matched" to each other one to one. 

  • The process by which things are matched together or paired up. 

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 matching and on the order of occurred in a corpus of books? (source: Google Ngram Viewer )