When a bond or stock is traded 'at par', its market price is equal to its face value or par value. This indicates that the security is neither trading at a premium nor at a discount relative to its stated value.

Credit risk, or default risk, is the likelihood that a borrower will be unable to make the required interest or principal payments on a debt obligation. Investors demand a higher yield (risk premium) on bonds with higher credit risk to compensate for the possibility of losing their investment.

A mortgage is a legal agreement where a debtor conveys an interest in real property to a creditor as security for a loan. If the borrower fails to repay the debt according to the agreed terms, the creditor has the legal right to seize the property to recover the outstanding balance.

The three traditional functions of money are acting as a medium of exchange, a unit of account, and a store of value. While money can sometimes serve as a store of value, it is often a poor hedge against inflation because rising price levels erode its purchasing power over time. Therefore, hedging against inflation is not a fundamental function of money, but rather a potential investment strategy or characteristic of other assets.

The capital market is the segment of the financial system where long-term debt and equity instruments are traded. Unlike money markets, which deal with short-term liquidity, capital markets provide the necessary funding for long-term investments and infrastructure projects, facilitating the transfer of capital from investors to entities requiring long-term financing.

Endowment funds are investment portfolios established by institutions to provide a perpetual source of funding. The principal is typically invested, and the income generated is used to support the institution's ongoing operations, research, or specific charitable activities, ensuring long-term financial sustainability for the organization.

Idiosyncratic risk, also known as unsystematic or specific risk, is the risk inherent to a specific company or industry. It is independent of the broader market movements. Examples include management changes, labor strikes, or product failures. Unlike systematic risk, which affects the entire economy, idiosyncratic risk can be mitigated or eliminated through proper portfolio diversification.

While paper money is highly portable and divisible, it is physically fragile. Compared to commodity money like gold or silver coins, paper currency is susceptible to tearing, burning, and general wear and tear, meaning it lacks the high degree of physical durability required for long-term storage of value.

In financial markets, a security is said to be trading 'at par' when its current market price is exactly equal to its face value or nominal value. This is a standard benchmark for bonds and preferred stocks. If the market price is higher than the face value, it is trading at a premium; if lower, it is trading at a discount.

The bid price represents the maximum amount a buyer is willing to pay for an asset. In financial markets, the difference between the bid price and the ask (or offer) price is known as the bid-ask spread, which reflects market liquidity and transaction costs.