Iris pseudacorus vs yellow water flag

Iris pseudacorus and yellow water flag both are nouns.

Word	Noun	Adjective	Verb	Adverb
Iris pseudacorus	Yes	No	No	No
yellow water flag	Yes	No	No	No

As nouns, Iris pseudacorus and yellow water flag are synonyms defined as:

Iris pseudacorus and yellow water flag: common yellow-flowered iris of Europe and North Africa, naturalized in United States and often cultivated

Other synonyms of Iris pseudacorus include yellow flag, yellow iris.

Iris pseudacorus (noun)	yellow water flag (noun)
common yellow-flowered iris of Europe and North Africa, naturalized in United States and often cultivated	common yellow-flowered iris of Europe and North Africa, naturalized in United States and often cultivated