-an vs -est

-an

suffix
  • Of or pertaining to; an adjectival suffix appended to various words, often nouns, to make an adjective form. (Often added to words of Latin origin, but also used with words of other origins. When a word ends in a, -n is used instead.) 

  • Appended to nouns to form an agent noun. (When males with a profession are distinguished from females, males are -an, females -(i)enne.) 

-est

suffix
  • Used to form the superlative of adjectives and adverbs. 

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