Planate and Unwrinkled

Planate adjective - Having been flattened.

Unwrinkled and planate are semantically related in even topic. In some cases you can use "Unwrinkled" instead an adjective "Planate", when it comes to topics like flat.

Unwrinkled adjective - Not wrinkled or creased.

Planate and unwrinkled are semantically related in even topic. Sometimes you can use "Planate" instead an adjective "Unwrinkled", if it concerns topics such as flat.