high mallow vs Malva sylvestris

high mallow and Malva sylvestris both are nouns.

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

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

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

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

high 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