What is the structural difference between thromboxanes and prostaglandins?

Thromboxanes have an aromatic ring, while prostaglandins have a cyclopentane ring.

Thromboxanes have a cyclopentane ring, while prostaglandins have a six-membered ring with an ether group.

Thromboxanes have a six-membered ring with an ether group, while prostaglandins have a cyclopentane ring.

Thromboxanes have three conjugated double bonds, while prostaglandins have a cyclopentane ring.