What optimizations exist on Access ports that don't exist on Trunk ports (by default)? [Cisco]

In STP, the command spanning-tree portfast only applies portfast if an interface is configured as or negotiated as an Access port.

This is an example of an optimization that only applies to Access ports.

(I know you can apply it to a trunk using switchport port-fast trunk)

My question is, what other optimization exist that only apply to access ports (even if there are workarounds to also apply them to Trunk ports)?