Old-hat and Outdated

Old-hat adjective - Repeated too often; overfamiliar through overuse.

Outdated and old-hat are semantically related. in old-fashioned topic. In some cases you can use "Outdated" instead an adjective phrase "Old-hat", when it comes to topics like antiquated.

Outdated adjective - Having passed its time of use or usefulness.

Old-hat and outdated are semantically related. Sometimes you can use "Old-hat" instead an adjective "Outdated".