an vs he

an

noun
  • The first letter of the Georgian alphabet, ა (Mkhedruli), Ⴀ (Asomtavruli) or ⴀ (Nuskhuri). 

num
  • one 

prep
  • In each; to or for each; per. 

article
  • Used before one and words with initial u, eu. 

  • Used before a vowel sound. 

  • Used before all consonants. 

  • Used before /h/ in an unstressed syllable. 

  • Used before /h/ in a stressed syllable. 

he

noun
  • The name of the fifth letter of many Semitic alphabets (Phoenician, Aramaic, Hebrew, Syriac, Arabic and others). 

  • A male. 

  • The name of the first letter of the Old South Arabian abjad. 

  • The game of tag, or it, in which the player attempting to catch the others is called "he". 

  • The player who chases and attempts to catch the others in this game. 

pron
  • A genderless object regarded as masculine, such as certain stars or planets (e.g. Sun, Mercury, Mars, Jupiter) or certain ships. 

  • A male person or animal already known or implied. 

  • they; he or she (a person whose gender is unknown or irrelevant.) 

  • it; an animal whose gender is unknown. 

intj
  • An expression of laughter. 

det
  • Synonym of his 

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