inheritance tax vs property tax

inheritance tax

noun
  • A tax based on the value of the property of a deceased person, and charged on the beneficiaries of the estate. 

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. 

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