in- vs sub-

in-

prefix

  • in, into, towards, within. 

  • Used with certain words to reverse their meaning 

  • in, into 

  • Added to adjectives to mean not 

  • Added to nouns to mean lacking or without 

sub-

prefix

  • under, beneath 

  • subsidiary, secondary 

  • almost, nearly 

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