send in vs suggest

send in

verb
  • to cause (something) to be delivered, especially by post/mail 

  • to give (one's name), present (one's card) when making a social call 

  • to send (a batsman) on to the field to bat. 

suggest

verb
  • To cause one to suppose (something); to bring to one's mind the idea (of something). 

  • To explicitly mention (something) as a possibility for consideration, often to recommend it 

  • To imply but stop short of explicitly stating (something). 

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