befall vs betime

befall

verb

  • To happen. 

  • To fall upon; fall all over; overtake 

  • To happen to. 

noun

  • Case; instance; circumstance; event; incident; accident. 

betime

verb

  • To occur; betide. 

adv

  • Betimes. 

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