The different types of ETFs are:
Gold ETFs: Gold ETFs offer investors a means of participating in the gold bullion market without the necessity of taking physical delivery of gold.
Index ETF:Index ETFs are the type of ETFs whose unit value is derived from an index. The underlying index act as a tracking instrument. These ETFs seek to track the performance of an index by holding in its portfolio the contents of the index.
International ETF: These ETFs have an international index like NASDAQ, HANG SENG as the underlying tracking instrument. The index chosen is often the major index within the country, designed to reflect the overall economic condition of the country
Sector Specific ETF: These ETFs have a specific sector like Bank, Infrastructure as the underlying tracking instrument. They closely track the performance of underlying sector &provide diversified exposure to your investments.