Melampsora lini vs flax rust

Melampsora lini and flax rust both are nouns.

Word	Noun	Adjective	Verb	Adverb
Melampsora lini	Yes	No	No	No
flax rust	Yes	No	No	No

As nouns, Melampsora lini and flax rust are synonyms defined as:

Other synonyms of Melampsora lini include flax rust fungus.

Melampsora lini (noun)	flax rust (noun)
fungus causing flax rust	fungus causing flax rust