Herbaceous plant and Rhubarb plant

Herbaceous plant noun - A plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests.

Rhubarb plant and herbaceous plant are semantically related. In some cases you can replace phrase "Rhubarb plant" with "Herbaceous plant", this phrases are similar.

Rhubarb plant noun - Plants having long green or reddish acidic leafstalks growing in basal clumps; stems (and only the stems) are edible when cooked; leaves are poisonous.

Herbaceous plant and rhubarb plant are semantically related. You can use "Herbaceous plant" instead a noun phrase "Rhubarb plant".