never vs off and on

never

adv
  • Negative particle (used to negate verbs in the simple past tense; also used absolutely). 

  • At no time; on no occasion; in no circumstance. 

  • Not at any other time; not on any other occasion; not previously. 

intj
  • A statement of defiance 

off and on

adv
  • On different tacks, now toward, and now away from, the land. 

How often have the words never and off and on occurred in a corpus of books? (source: Google Ngram Viewer )