fledgeless vs unlearned

fledgeless

adj
  • Not fully formed; incipient. 

  • Of a bird, that has not fledged. 

unlearned

adj
  • Of a behavior, not learned; innate. 

  • Of a person, ignorant, uneducated, untaught, untrained. 

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