eq·ui·ty

/ˈɛkwəti/ noun, pl -ties

1 [noncount] formal : fairness or justice in the way people are treated

In making these decisions we should be governed by the principle of equity.

2 finance

2 a [noncount] : the value of a piece of property (such as a house) after any debts that remain to be paid for it (such as the amount of a mortgage) have been subtracted

We've been slowly paying off our mortgage and building up equity in our house.

a home equity loan [=a loan based on the amount of equity you have in your home]

2 b [count] : a share in a company : a share of a company's stock

— usually plural

Half of his money is invested in bonds and the other half in equities.