present tense vs today

present tense

noun
  • A grammatical tense whose principal function is to locate a situation or event in the present time. 

today

noun
  • A current day or date. 

  • The present time period; nowadays. 

  • From 6am to 6pm on the current day. 

adj
  • Current; up to date. 

adv
  • On the current day or date. 

  • In the current era; nowadays. 

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