Lid and Opera hat

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

Opera hat and lid are semantically related. In some cases you can use "Opera hat" instead a noun "Lid".

Opera hat noun - A man's hat with a tall crown; usually covered with silk or with beaver fur.

Lid and opera hat are semantically related. Sometimes you can use "Lid" instead a noun phrase "Opera hat".