builder vs introducer

builder

noun
  • A person who builds or constructs things. 

  • Master artisan, who receives his instructions from the architect, and employs workers. 

  • Software that allows the user to create a certain kind of automated output. 

  • A bodybuilder. 

introducer

noun
  • Someone or something that introduces. 

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