Lid and Sun hat

Lid noun - A piece placed over an open container to hold in, protect, or conceal its contents.

Sun hat and lid are semantically related. In some cases you can replace phrase "Sun hat" with "Lid", this terms are similar.

Sun hat noun - A hat with a broad brim that protects the face from direct exposure to the sun.

Lid and sun hat are semantically related. You can use "Lid" instead a noun phrase "Sun hat".