property tax vs rates

property tax

noun
  • A tax, usually ad valorem, charged on the basis of the fair market value of property. The scope of taxable property varies by jurisdiction and it may include personal property in addition to real estate. 

rates

noun
  • Taxes, usually on property, levied by local government. 

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