suggest vs touch base

suggest

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

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

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

touch base

verb
  • To meet or make contact with someone, usually to consult, review, visit, or communicate. 

  • To touch a base, usually with a foot but sometimes with a hand. 

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