tiers
n. countable B2 Upper Intermediate US //ˈtiɹz// tiers
n. one of several levels in a system or layers in a structure. You use this when things are organized from bottom to top or by importance.
n. one of a series of levels or layers in a hierarchical structure or physical arrangement. Often refers to levels of service, pricing, or social status.
The wedding cake has three tiers.
The subscription service offers three different tiers of membership depending on how much you want to pay.
The government introduced a system of regional tiers to manage the crisis, with each level imposing stricter regulations based on local data.
Usage
Usually plural when referring to a general system of levels; singular when identifying a specific layer.