remember vs think of

remember

verb
  • To keep in mind, be mindful of 

  • To not forget (to do something required) 

  • To give (a person) money as a token of appreciation of past service or friendship. 

  • To memorize; to put something into memory. 

  • to commemorate, to have a remembrance ceremony 

  • To convey greetings from. 

  • To engage in the process of recalling memories. 

  • To recall from one's memory; to have an image in one's memory. 

think of

verb
  • Used other than figuratively or idiomatically: see think, of. (to think on the subject of) 

  • To create in one's mind; to originate an idea through thought. 

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