gapping vs haplology

gapping

noun
  • A type of ellipsis that occurs in the non-initial conjuncts of coordinate structures, and usually elides minimally a finite verb and further any non-finite verbs that are present. Example: "Some ate bread, and others rice." 

  • The formation of a gap. 

haplology

noun
  • An instance of deleting one of two almost identical syllables within a word. 

  • The process of deleting one of two almost identical syllables within a word. 

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