Bullrush and Reed mace

Bullrush noun - Tall marsh plant with cylindrical seed heads that explode when mature shedding large quantities of down; its long flat leaves are used for making mats and chair seats; of North America, Europe, Asia and North Africa.

Reed mace is a synonym for bullrush. In some cases you can use "Reed mace" instead a noun "Bullrush".

Reed mace noun - Tall marsh plant with cylindrical seed heads that explode when mature shedding large quantities of down; its long flat leaves are used for making mats and chair seats; of North America, Europe, Asia and North Africa.

Bullrush is a synonym for reed mace. You can use "Bullrush" instead a noun phrase "Reed mace".