1.assets of a company comprise of liabilities(debt) and equity, equity is always expressed as the value of common stock owned by the stockholder.
eg: Company A issued 500 shares of common stock, stockholder Sean buys 200 shares, and Sally buys 300 shares, then Sean and Sally get their equity on company A in terms of their respective investment.
2.the interest(right) or value that the owner has in real estate over and above the liens against it.
Note: the right or value owned by the lender side is called liens , the right or value owned by the owner side is called equity .
eg:A property has a market value of $100.The owner currently owes $60 in mortgage loans that are against the property.The owner's equity is $40.