At least a few times a month at Microsoft I’d get customers, resellers, and even internal folks less involved in Azure confuse these two terms.

TLDR

• GCC (Government Community Cloud) = M365 for Gov’t Customers, FedRAMP Moderate
• Azure Gov’t = Azure, FedRAMP High

To fully understand, this is the best write up: https://techcommunity.microsoft.com/blog/publicsectorblog/history-of-microsoft-cloud-offerings-leading-to-the-us-sovereign-cloud—july-20/2157821