hypernym vs hyperonym

hypernym

noun
  • A superordinate word or phrase; a term whose referents form a set which includes as a subset the referents of a subordinate term—as, for example, insect being (a hypernym) for ant. 

hyperonym

noun
  • Hypernym; superordinate term. 

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