goods and services tax vs inheritance tax

goods and services tax

noun
  • A tax very similar to the value added tax, levied, for example, in Australia, Canada, New Zealand, and Singapore. 

inheritance tax

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

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