tall mallow vs Malva sylvestris

tall mallow and Malva sylvestris both are nouns.

Word	Noun	Adjective	Verb	Adverb
tall mallow	Yes	No	No	No
Malva sylvestris	Yes	No	No	No

As nouns, tall mallow and Malva sylvestris are synonyms defined as:

tall mallow and Malva sylvestris: erect or decumbent Old World perennial with axillary clusters of rosy-purple flowers; introduced in United States

Other synonyms of tall mallow include cheese, cheeseflower, high mallow.

tall mallow (noun)	Malva sylvestris (noun)
erect or decumbent Old World perennial with axillary clusters of rosy-purple flowers; introduced in United States	erect or decumbent Old World perennial with axillary clusters of rosy-purple flowers; introduced in United States