become vs betime

become

verb
  • To come about; happen; come into being; arise. 

  • To be proper for; to beseem. 

  • Of an adornment, piece of clothing etc.: to look attractive on (someone). 

  • begin to be; turn into. 

betime

verb
  • To occur; betide. 

adv
  • Betimes. 

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