sweet flag vs flagroot

sweet flag and flagroot both are nouns.

Word	Noun	Adjective	Verb	Adverb
sweet flag	Yes	No	No	No
flagroot	Yes	No	No	No

As nouns, sweet flag and flagroot are synonyms defined as:

sweet flag and flagroot: perennial marsh plant having swordlike leaves and aromatic roots

Other synonyms of sweet flag include Acorus calamus, calamus, myrtle flag, sweet calamus.

sweet flag (noun)	flagroot (noun)
perennial marsh plant having swordlike leaves and aromatic roots	perennial marsh plant having swordlike leaves and aromatic roots