The distinction between stocks and shares is pretty blurred in the Financial market.Generally,both words are used interchangeably to refer to financial equities, specifically, securities that denote ownership in a public company.Investment professionals often use the word stocks as synonymous with companies—publicly-traded companies, of course. They might refer to energy stocks, value stocks, large- or small-cap stocks, food-sector stocks, blue-chip stocks, and so on. In each case, these categories don't refer so much to the stocks themselves as to the corporations that issued them.while, a share is the single smallest denomination of a company's stock. So if you're divvying up stock and referring to specific characteristics, the proper word to use is shares.