Hands and Hard hat

Hands noun - (with `in') guardianship over; in divorce cases it is the right to house and care for and discipline a child.

Hard hat and hands are semantically related. In some cases you can use "Hard hat" instead a noun "Hands".

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

Hands and hard hat are semantically related. Sometimes you can use "Hands" instead a noun phrase "Hard hat".