charlock vs Sinapis arvensis

charlock and Sinapis arvensis both are nouns.

Word	Noun	Adjective	Verb	Adverb
charlock	Yes	No	No	No
Sinapis arvensis	Yes	No	No	No

As nouns, charlock and Sinapis arvensis are synonyms defined as:

charlock and Sinapis arvensis: weedy Eurasian plant often a pest in grain fields

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

charlock (noun)	Sinapis arvensis (noun)
weedy Eurasian plant often a pest in grain fields	weedy Eurasian plant often a pest in grain fields