charlock vs Brassica kaber

charlock and Brassica kaber both are nouns.

Word	Noun	Adjective	Verb	Adverb
charlock	Yes	No	No	No
Brassica kaber	Yes	No	No	No

As nouns, charlock and Brassica kaber are synonyms defined as:

charlock and Brassica kaber: weedy Eurasian plant often a pest in grain fields

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

charlock (noun)	Brassica kaber (noun)
weedy Eurasian plant often a pest in grain fields	weedy Eurasian plant often a pest in grain fields