LAN loop vs VLAN loop

Hello,

I'm confused about the LAN loop and I'm hoping i can get a clear example. I understand an example where per vlan loop can happen, which is if we have two switches connected to each other through two access ports (VLAN 10) and all the edge ports are also access ports (VLAN 10), in order for a loop to not happen between the two switches on the VLAN 10, we need PVSTP+.

Can someone give me a similar example when does a LAN loop happen which I heard they also call it trunk loop, I know the solution for this kind of loop is STP or RSTP.

If two switches are connected via two trunk ports and two clients are communicating, it should be always a vlan loop, when does a LAN loop happen that is solved by STP?