Armour-plated and Case-hardened

Armour-plated adjective - Covered with heavy steel.

Case-hardened and armour-plated are semantically related. In some cases you can use "Case-hardened" instead an adjective phrase "Armour-plated".

Case-hardened adjective - Having or showing a lack of sympathy or tender feelings.

Armour-plated and case-hardened are semantically related. You can use "Armour-plated" instead an adjective phrase "Case-hardened".