earnings

The word is earning plus the plural -s, and in this sense it lives only in the plural: you speak of her earnings, never her earning. It takes a plural verb (her earnings were modest) and sits comfortably after annual or weekly. The same plural-only habit carries over to a company's profits and investment returns, so the agreement rule holds across all three.

Accountants mean something narrower than everyday profit: net income after taxes, interest and operating expenses, measured over a set period. Hence the familiar collocations quarterly earnings and earnings per share, where the figure is divided across a company's shares. The word is the same one used for a worker's pay, but here it names what remains once costs are paid, not simply what comes in.

Here the money itself does the earning: interest, dividends and realized capital gains that accrue to invested capital over a holding period. Analysts often state these returns net of fees and adjusted for inflation to show the real yield. Keep it apart from a company's profits: those come from running a business, while these come from owning a stake or a security.