subalternate vs youthful

subalternate

adj
  • Subaltern; inferior; subordinate. 

  • Succeeding by turns; successive. 

noun
  • A particular proposition, as opposed to a universal one. 

youthful

adj
  • Young or seeming young. 

  • Characteristic of young people. 

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