Herbaceous plant and Wood mint

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

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

Wood mint noun - American herb of genus Blephilia with more or less hairy leaves and clusters of purplish or bluish flowers.

Herbaceous plant and wood mint are semantically related. You can use "Herbaceous plant" instead a noun phrase "Wood mint".