for sure vs strictly

for sure

prep
  • definitely, positively, without doubt 

strictly

adv
  • In a manner that applies to every member of a set or every interval of a function 

  • In a narrow or limited sense. 

  • In a strict manner. 

  • In a limited manner; only 

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