spring to mind vs suggest

spring to mind

verb
  • To appear suddenly in one's thoughts, often as an example of something. 

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 spring to mind and suggest occurred in a corpus of books? (source: Google Ngram Viewer )