lead into vs prefix

lead into

prefix

verb
  • To determine beforehand; to set in advance. 

  • To put or fix before, or at the beginning of something; to place at the start. 

noun
  • A morpheme added to the beginning of a word to modify its meaning, for example as, pre- in prefix, con- in conjure, re- in reheat, etc. 

  • An initial segment of a string of characters. 

  • A set of digits placed before a telephone number, to indicate where the number is based, what type of phone number it is (landline, mobile, toll-free, premium rate etc.) 

  • A title added to a person's name, such as Mr. or Dr. 

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