stinking chamomile vs stinking mayweed

stinking chamomile and stinking mayweed both are nouns.

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

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

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

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

stinking chamomile (noun)	stinking mayweed (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