Non-cash item describes negotiable instrument, like a check or bank draft, which is deposited but can’t be credited until it clears the issuer's account.

Non-cash charge is a written down or accounting expense that does not need a cash payment.

A natural monopoly is a monopoly that exists due to the high start-up costs or powerful economies of scale of doing business in a specific industry. 

News trader is a trader who largely makes decisions based on news announcements. 

Net proceeds are the amount which the seller receives after the sale of an asset after all costs and expenses are deducted from gross proceeds.

Net volume is a technical indicator calculated by subtracting security's uptick volume by its downtick volume over a certain given period of time.

Net-net is a value investing technique where a company is valued solely because of its net current assets.

Net premium is the anticipated present value of a policy’s benefits less than expected value of future premiums. 

Nominal is a financial term meaning very small or really below the real value or cost.

A non-controlling interest is a situation where a shareholder owns less than 50% of company’s shares and has no control over the decisions.