rehash vs reweigh

rehash

verb
  • To hash (chop food into small pieces) again. 

  • To repeat with minor variation. 

  • To analyze a prior contentious or embarrassing event. 

  • To recompute the structure of a hash table, taking into account any newly added items. 

noun
  • A recomputation of the structure of a hash table, taking into account any newly added items. 

  • Something reworked, or made up from old materials. 

reweigh

verb
  • To weigh again; to weigh something that has already been weighed. 

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