Bog plant and Cattail

Bog plant noun - A semiaquatic plant that grows in soft wet land; most are monocots: sedge, sphagnum, grasses, cattails, etc; possibly heath.

Cattail and bog plant are semantically related. In some cases you can replace term "Cattail" with "Bog plant", this terms are similar.

Cattail noun - Tall erect herbs with sword-shaped leaves; cosmopolitan in fresh and salt marshes.

Bog plant and cattail are semantically related. You can use "Bog plant" instead a noun "Cattail".