Friday vs sixth

Friday

noun
  • The sixth day of the week in many religious traditions, and the fifth day of the week in systems using the ISO 8601 norm; the Muslim Sabbath; it follows Thursday and precedes Saturday. 

  • The last workday in a work schedule that is not Monday through Friday. 

adv
  • On Friday. 

sixth

noun
  • The interval between one note and another, five notes higher in the scale, for example C to A, a major sixth, or C to A flat, a minor sixth. (Note that the interval covers six notes counting inclusively, for example C-D-E-F-G-A.) 

  • One of six equal parts of a whole. 

  • The person or thing in the sixth position. 

verb
  • to divide by six, which also means multiplying a denominator by six 

adj
  • The ordinal form of the number six. 

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