Herbaceous plant and Mad apple

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

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

Mad apple noun - Hairy upright herb native to southeastern Asia but widely cultivated for its large glossy edible fruit commonly used as a vegetable.

Herbaceous plant and mad apple are semantically related. You can use "Herbaceous plant" instead a noun phrase "Mad apple".