jimson weed vs thorn apple

jimson weed and thorn apple both are nouns.

Word	Noun	Adjective	Verb	Adverb
jimson weed	Yes	No	No	No
thorn apple	Yes	No	No	No

As nouns, thorn apple is a hypernym of jimson weed; that is, thorn apple is a word with a broader meaning than jimson weed:

jimson weed: intensely poisonous tall coarse annual tropical weed having rank-smelling foliage, large white or violet trumpet-shaped flowers and prickly fruits
thorn apple: any of several plants of the genus Datura

jimson weed (noun)	thorn apple (noun)
intensely poisonous tall coarse annual tropical weed having rank-smelling foliage, large white or violet trumpet-shaped flowers and prickly fruits	any of several plants of the genus Datura