corn mayweed vs corn chamomile

corn mayweed and corn chamomile both are nouns.

Word	Noun	Adjective	Verb	Adverb
corn mayweed	Yes	No	No	No
corn chamomile	Yes	No	No	No

As nouns, corn mayweed and corn chamomile are synonyms defined as:

corn mayweed and corn chamomile: European white-flowered weed naturalized in North America

Other synonyms of corn mayweed include Anthemis arvensis, field chamomile.

corn mayweed (noun)	corn chamomile (noun)
ubiquitous European annual weed with white flowers and finely divided leaves naturalized and sometimes cultivated in eastern North America; sometimes included in genus Matricaria	European white-flowered weed naturalized in North America
European white-flowered weed naturalized in North America