wild mustard vs field mustard

wild mustard and field mustard both are nouns.

Word	Noun	Adjective	Verb	Adverb
wild mustard	Yes	No	No	No
field mustard	Yes	No	No	No

As nouns, wild mustard and field mustard are synonyms defined as:

wild mustard and field mustard: weedy Eurasian plant often a pest in grain fields

Other synonyms of wild mustard include Brassica kaber, chadlock, charlock, Sinapis arvensis.

wild mustard (noun)	field mustard (noun)
weedy Eurasian plant often a pest in grain fields	weedy Eurasian plant often a pest in grain fields