betime vs overtop

betime

verb

  • To occur; betide. 

adv

  • Betimes. 

overtop

verb

  • To be higher than; to rise over the top of. 

  • To place too many toppings on. 

adv

  • Over the top. 

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