Hidebound and Hard hat

Hidebound adjective - Tending to favor established ideas, conditions, or institutions.

Hard hat and hidebound are semantically related. In some cases you can use "Hard hat" instead an adjective "Hidebound".

Hard hat noun - A lightweight protective helmet (plastic or metal) worn by construction workers.

Hidebound and hard hat are semantically related. Sometimes you can use "Hidebound" instead an adjective phrase "Hard hat".