hypernym vs umbrella term

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. 

umbrella term

noun
  • A term used to cover a broad category of things rather than a single specific item. 

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