field pennycress vs stinkweed

field pennycress and stinkweed both are nouns.

Word	Noun	Adjective	Verb	Adverb
field pennycress	Yes	No	No	No
stinkweed	Yes	No	No	No

As nouns, field pennycress and stinkweed are synonyms defined as:

field pennycress and stinkweed: foetid Eurasian weed having round flat pods; naturalized throughout North America

Other synonyms of field pennycress include fanweed, French weed, mithridate mustard, penny grass, Thlaspi arvense.

field pennycress (noun)	stinkweed (noun)
foetid Eurasian weed having round flat pods; naturalized throughout North America	foetid Eurasian weed having round flat pods; naturalized throughout North America