American wormseed vs wormseed

American wormseed and wormseed both are nouns.

Word	Noun	Adjective	Verb	Adverb
American wormseed	Yes	No	No	No
wormseed	Yes	No	No	No

As nouns, American wormseed and wormseed are synonyms defined as:

Other synonyms of American wormseed include Chenopodium ambrosioides, Mexican tea, Spanish tea.

American wormseed (noun)	wormseed (noun)
rank-smelling tropical American pigweed	rank-smelling tropical American pigweed