aril vs plant structure

aril and plant structure both are nouns.

Word	Noun	Adjective	Verb	Adverb
aril	Yes	No	No	No
plant structure	Yes	No	No	No

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

aril: fleshy and usually brightly colored cover of some seeds that develops from the ovule stalk and partially or entirely envelops the seed
plant structure: any part of a plant or fungus

Other hypernyms of aril include plant part.

aril (noun)	plant structure (noun)
fleshy and usually brightly colored cover of some seeds that develops from the ovule stalk and partially or entirely envelops the seed	any part of a plant or fungus