What is the difference between USDT and USDC?

Could you elaborate on the fundamental differences between USDT and USDC? Both seem to be stablecoins pegged to the US dollar, but I'm curious about their distinct features. For instance, which blockchain technology do they rely on? Are there any notable differences in their issuance and regulatory frameworks? Additionally, how do they vary in terms of liquidity and market acceptance? Your insights would greatly assist me in understanding the nuances between these two cryptocurrencies.