infer vs mean to say

infer

verb
  • To lead to (something) as a consequence; to imply. 

  • To introduce (something) as a reasoned conclusion; to conclude by reasoning or deduction, as from premises or evidence. 

mean to say

verb
  • To imply or intend to convey with one's words; used to correct or clarify one's previous utterance, or to seek such clarification. 

How often have the words infer and mean to say occurred in a corpus of books? (source: Google Ngram Viewer )