drag up vs suckle

drag up

verb
  • Used other than figuratively or idiomatically: see drag, up. 

  • To educate reluctant pupils. 

  • To remind people of something, usually unpleasant, from the past. 

suckle

verb
  • To give suck to; to nurse at the breast, udder, or dugs. 

  • To nurse from (a breast, nursing mother, etc.). 

  • To nurse; to suck milk from a nursing mother. 

noun
  • An act of suckling 

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