What are the different types of token swaps?

In the ever-evolving world of cryptocurrency and decentralized finance, one of the key mechanisms that facilitate value exchange is token swaps. But what are the different types of token swaps and how do they operate? Could you elaborate on the various swap mechanisms, such as atomic swaps, liquidity pools, and decentralized exchanges? Are there any specific advantages or disadvantages to each type? Also, how do they differ in terms of speed, cost, and security? Understanding the nuances of these swaps is crucial for any crypto enthusiast or investor seeking to optimize their trading strategies.