In the realm of financial marketplaces, there's a broad spectrum to understand. In general, a financial marketplace is a hub where buyers and sellers come together to negotiate and execute trades in various financial instruments. However, diving into the depths of these marketplaces, you'll find a rich variety of instruments each appealing to different participants for myriad reasons. The different marketplaces themselves are subject to varying degrees of regulation, which provides a structured environment for these transactions.

Let's acquaint ourselves with the different classifications of financial marketplaces as aside from conventional divisions like stock and bond markets, there are many other categories to be aware of. You might hear of primary versus secondary markets, signifying the initial offering of securities versus their subsequent trading.

Then there are cash markets dealing with immediate asset exchanges. These contrast with derivative markets, which are centered on contracts based on future asset values.

Further distinctions include exchange trading where transactions are centralized and regulated. Versus over the counter trading, which are more flexible and decentralized. Lastly, understanding the nuances between quote driven markets where dealers set the prices and order driven markets where prices are determined by collective invest orders. This is essential to understand as well.