shepherd's pouch vs shepherd's purse

shepherd's pouch and shepherd's purse both are nouns.

Word	Noun	Adjective	Verb	Adverb
shepherd's pouch	Yes	No	No	No
shepherd's purse	Yes	No	No	No

As nouns, shepherd's pouch and shepherd's purse are synonyms defined as:

shepherd's pouch and shepherd's purse: white-flowered annual European herb bearing triangular notched pods; nearly cosmopolitan as an introduced weed

Other synonyms of shepherd's pouch include Capsella bursa-pastoris.

shepherd's pouch (noun)	shepherd's purse (noun)
white-flowered annual European herb bearing triangular notched pods; nearly cosmopolitan as an introduced weed	white-flowered annual European herb bearing triangular notched pods; nearly cosmopolitan as an introduced weed