Spanish tea vs wormseed

Spanish tea and wormseed both are nouns.

Word	Noun	Adjective	Verb	Adverb
Spanish tea	Yes	No	No	No
wormseed	Yes	No	No	No

As nouns, Spanish tea and wormseed are synonyms defined as:

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

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