by and by vs in a jiffy

by and by

noun

  • Heaven; the hereafter. Usually preceded with "the sweet." 

adv

  • After a short time. 

  • After an indefinite period. 

in a jiffy

prep

  • Very quickly; without delay. 

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