green dragon vs aroid

green dragon and aroid both are nouns.

Word	Noun	Adjective	Verb	Adverb
green dragon	Yes	No	No	No
aroid	Yes	Yes	No	No

As nouns, aroid is a hypernym of green dragon; that is, aroid is a word with a broader meaning than green dragon:

green dragon: early spring-flowering plant of eastern North America resembling the related jack-in-the-pulpit but having digitate leaves, slender greenish yellow spathe and elongated spadix
aroid: any plant of the family Araceae; have small flowers massed on a spadix surrounded by a large spathe

Other hypernyms of green dragon include arum.

As nouns, aroid is a hypernym of green dragon; that is, aroid is a word with a broader meaning than green dragon:

green dragon: European arum resembling the cuckoopint
aroid: any plant of the family Araceae; have small flowers massed on a spadix surrounded by a large spathe

Other hypernyms of green dragon include arum.

green dragon (noun)	aroid (noun)
early spring-flowering plant of eastern North America resembling the related jack-in-the-pulpit but having digitate leaves, slender greenish yellow spathe and elongated spadix	any plant of the family Araceae; have small flowers massed on a spadix surrounded by a large spathe
European arum resembling the cuckoopint

green dragon (adjective)	aroid (adjective)
	relating to a plant of the family Araceae