poor man's weatherglass vs red pimpernel

poor man's weatherglass and red pimpernel both are nouns.

Word	Noun	Adjective	Verb	Adverb
poor man's weatherglass	Yes	No	No	No
red pimpernel	Yes	No	No	No

As nouns, poor man's weatherglass and red pimpernel are synonyms defined as:

poor man's weatherglass and red pimpernel: herb with scarlet or white or purple blossoms that close at approach of rainy weather

Other synonyms of poor man's weatherglass include Anagallis arvensis, scarlet pimpernel.

poor man's weatherglass (noun)	red pimpernel (noun)
herb with scarlet or white or purple blossoms that close at approach of rainy weather	herb with scarlet or white or purple blossoms that close at approach of rainy weather