gender identity vs oomph

gender identity

noun

  • A person's internal sense of self as belonging to a particular gender or genders, or to no gender. 

oomph

noun

  • Sex appeal. 

  • A bassy grunting or thudding sound. 

  • Strength, power, passion or effectiveness; clout. 

verb

  • To produce a bassy grunting or thudding sound. 

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