day and night vs never

day and night

adv
  • All the time; round the clock; unceasingly. 

noun
  • Synonym of chalk and cheese (“two things that are very different”) 

never

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

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

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

intj
  • A statement of defiance 

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