Case-hardened and Toughened by experience

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

Toughened by experience and case-hardened are semantically related. In some cases you can use "Toughened by experience" instead an adjective phrase "Case-hardened".

Case-hardened and toughened by experience are semantically related. You can use "Case-hardened" instead an adjective phrase "Toughened by experience".