-le vs -th

-le

suffix
  • A frequentative suffix of verbs, indicating repetition or continuousness 

  • A suffix forming adjectives from verbs with the meaning of "prone to", "tending to", "apt to", "capable of"; compare -ative 

-th

suffix
  • Used to form nouns from verbs of action. 

  • Used to form a term denoting the ordinal numeral corresponding to the value, being a natural number, of a mathematical expression. 

  • Used to form the ordinal numeral when the final term of the spelled number is not “first”, “second”, or “third”. 

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