An Emergency Fund is money that you've saved and that you will only use for emergencies.
ETF is the abbreviation for Exchange Traded Fund.
Equity means ownership. Stocks are a type of equity because a stock is ownership in a company.
The Equity Market is the place where stocks are traded.
An exchange is a physical or virtual place where buyers and sellers of stocks and bonds are matched to trade.
Exchange Traded Fund (ETF)
Exchange Traded Fund is a diversified fund whose shares trade on an exchange.
Execution means to do a trade. If you buy a stock, you executed a stock trade.
Expense is the cost of something.