decenary vs decennary

decenary

adj
  • Of or related to the number ten, (particularly) as a base of numeration. 

  • Of or related to a tithing. 

  • Containing or comprising ten items or units. 

noun
  • A tithing. 

decennary

adj
  • Decennial: of or related to a ten-year period. 

noun
  • A decennium: a period of ten years. 

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