California tree poppy vs matilija poppy

California tree poppy and matilija poppy both are nouns.

Word	Noun	Adjective	Verb	Adverb
California tree poppy	Yes	No	No	No
matilija poppy	Yes	No	No	No

As nouns, California tree poppy and matilija poppy are synonyms defined as:

California tree poppy and matilija poppy: tall branching subshrub of California and Mexico often cultivated for its silvery-blue foliage and large fragrant white flowers

Other synonyms of California tree poppy include Romneya coulteri.

California tree poppy (noun)	matilija poppy (noun)
tall branching subshrub of California and Mexico often cultivated for its silvery-blue foliage and large fragrant white flowers	tall branching subshrub of California and Mexico often cultivated for its silvery-blue foliage and large fragrant white flowers