decennary vs tenth

decennary

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

noun
  • A decennium: a period of ten years. 

tenth

adj
  • The ordinal numeral form of ten; next in order after that which is ninth. 

  • Being one of ten equal parts of a whole. 

verb
  • To divide by ten, into tenths. 

noun
  • The person or thing coming next after the ninth in a series; that which is in the tenth position. 

  • One of ten equal parts of a whole. 

  • The interval between any tone and the tone represented on the tenth degree of the staff above it, as between one of the scale and three of the octave above; the octave of the third. 

  • A temporary aid issuing out of personal property, and granted to the king by Parliament; formerly, the real tenth part of all the movables belonging to the subject. 

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