Alliaceous plant and Wild onion

Alliaceous plant noun - Bulbous plants having a characteristic pungent onion odor.

Wild onion and alliaceous plant are semantically related. In some cases you can replace phrase "Wild onion" with "Alliaceous plant", this phrases are similar.

Wild onion noun - Any of various plants of the genus Allium with edible bulbs found growing wild.

Alliaceous plant and wild onion are semantically related. You can use "Alliaceous plant" instead a noun phrase "Wild onion".