jimsonweed vs jimson weed

jimsonweed and jimson weed both are nouns.

Word	Noun	Adjective	Verb	Adverb
jimsonweed	Yes	No	No	No
jimson weed	Yes	No	No	No

As nouns, jimsonweed and jimson weed are synonyms defined as:

jimsonweed and jimson weed: intensely poisonous tall coarse annual tropical weed having rank-smelling foliage, large white or violet trumpet-shaped flowers and prickly fruits

Other synonyms of jimsonweed include apple of Peru, common thorn apple, Datura stramonium, Jamestown weed.

jimsonweed (noun)	jimson weed (noun)
intensely poisonous tall coarse annual tropical weed having rank-smelling foliage, large white or violet trumpet-shaped flowers and prickly fruits	intensely poisonous tall coarse annual tropical weed having rank-smelling foliage, large white or violet trumpet-shaped flowers and prickly fruits