common tarweed vs common madia

common tarweed and common madia both are nouns.

Word	Noun	Adjective	Verb	Adverb
common tarweed	Yes	No	No	No
common madia	Yes	No	No	No

As nouns, common tarweed and common madia are synonyms defined as:

common tarweed and common madia: California annual having red-brown spots near the base of its yellow flower rays

Other synonyms of common tarweed include Madia elegans.

common tarweed (noun)	common madia (noun)
California annual having red-brown spots near the base of its yellow flower rays	California annual having red-brown spots near the base of its yellow flower rays