What are the different types of crypto exchange fees?

In the world of cryptocurrency trading, exchange fees are a crucial factor to consider for both investors and traders. Could you elaborate on the different types of crypto exchange fees that traders and investors often encounter? Are there any specific fees associated with buying, selling, depositing, or withdrawing cryptocurrency? Additionally, are there any hidden or unexpected fees that traders should be aware of? Understanding the various types of fees can help traders make more informed decisions and potentially reduce costs associated with their crypto transactions.