What is the difference between Kraken and OKX?

Could you please explain the key differences between Kraken and OKX? As both are popular cryptocurrency exchanges, I'm curious to know how they differ in terms of features, security measures, available cryptocurrencies, trading pairs, fees, user interface, and any other distinguishing factors that might be important for traders and investors to consider? Additionally, are there any specific advantages or disadvantages to using one over the other?