Small-cap stocks are stocks that have a market capitalization of less than $2 billion. They are often referred to as "small caps" in the financial world. However, there are other synonyms that can be used to describe them. Some of these include micro-caps, penny stocks, and junior stocks. Micro-caps are stocks that have a market capitalization of less than $300 million, while penny stocks are stocks that trade for less than $5 per share. Junior stocks are stocks issued by smaller companies with a growth potential. While these terms all refer to similar types of stocks, they can have slightly different definitions depending on the context in which they are used.