callow vs early

callow

adj
  • Newly emerged or hatched, juvenile. 

  • Immature, lacking in life experience. 

  • Lacking color or firmness (of some kinds of insects or other arthropods, such as spiders, just after ecdysis); teneral. 

  • Shallow or weak-willed. 

  • Unburnt. 

  • Unfledged (of a young bird), featherless. 

  • Of land: low-lying and liable to be submerged. 

  • Bald, hairless, bare. 

noun
  • A callow young bird. 

  • An alluvial flat. 

  • A callow or teneral phase of an insect or other arthropod, typically shortly after ecdysis, while the skin still is hardening, the colours have not yet become stable, and as a rule, before the animal is able to move effectively. 

early

adj
  • Having begun to occur; in its early stages. 

  • Near the start or beginning. 

  • Near the start of the day. 

  • At a time in advance of the usual or expected event. 

  • Arriving a time before expected; sooner than on time. 

  • Of a star or class of stars, hotter than the sun. 

adv
  • At a time before expected; sooner than usual. 

  • Soon; in good time; seasonably. 

noun
  • A shift (scheduled work period) that takes place early in the day. 

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