wild mustard vs charlock

wild mustard and charlock both are nouns.

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

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

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

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

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