eschalot vs onion plant

eschalot and onion plant both are nouns.

Word	Noun	Adjective	Verb	Adverb
eschalot	Yes	No	No	No
onion plant	Yes	No	No	No

As nouns, onion plant is a hypernym of eschalot; that is, onion plant is a word with a broader meaning than eschalot:

eschalot: type of onion plant producing small clustered mild-flavored bulbs used as seasoning
onion plant: bulbous plant having hollow leaves cultivated worldwide for its rounded edible bulb

Other hypernyms of eschalot include Allium cepa, onion.

eschalot (noun)	onion plant (noun)
type of onion plant producing small clustered mild-flavored bulbs used as seasoning	bulbous plant having hollow leaves cultivated worldwide for its rounded edible bulb