What is the 5 year USD swap rate?

Excuse me, could you please elaborate on the concept of the 5-year USD swap rate? I'm curious to understand what it represents and how it's calculated. Is it a measure of the expected interest rate differential between two currencies over a five-year period, or is there something else to it? Additionally, how is this rate typically used in the financial and cryptocurrency markets? I'm keen to gain a deeper understanding of its significance and implications.