nonstop vs perpetually

nonstop

adv
  • Without stopping; without interruption or break 

adj
  • Without stopping; without interruption or break. 

  • Describing a point mutation within a stop codon that causes the continued translation of an mRNA strand. 

noun
  • A linguistic sound that is not a stop; a continuant. 

  • A convenience store in parts of Europe, open 24 hours a day. 

  • A nonstop journey, especially a nonstop flight. 

perpetually

adv
  • Seeming to never end; endlessly; constantly. 

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