stinking mayweed vs stinking chamomile

stinking mayweed and stinking chamomile both are nouns.

Word	Noun	Adjective	Verb	Adverb
stinking mayweed	Yes	No	No	No
stinking chamomile	Yes	No	No	No

As nouns, stinking mayweed and stinking chamomile are synonyms defined as:

stinking mayweed and stinking chamomile: widespread rank-smelling weed having white-rayed flower heads with yellow discs

Other synonyms of stinking mayweed include Anthemis cotula, dog fennel, mayweed.

stinking mayweed (noun)	stinking chamomile (noun)
widespread rank-smelling weed having white-rayed flower heads with yellow discs	widespread rank-smelling weed having white-rayed flower heads with yellow discs