infantile vs subalternate

infantile

adj
  • Childish; immature. 

  • Pertaining to infants. 

subalternate

adj
  • Subaltern; inferior; subordinate. 

  • Succeeding by turns; successive. 

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

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