inter- vs under-

inter-

prefix

  • within 

  • intermediate 

  • between, amid, among 

  • mutual, together 

  • reciprocal, to each other 

under-

prefix

  • Beneath, under 

  • Behind 

  • Subordinate to 

  • Deficient, below what is correct 

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