sweet shrub vs Calycanthus floridus

sweet shrub and Calycanthus floridus both are nouns.

Word	Noun	Adjective	Verb	Adverb
sweet shrub	Yes	No	No	No
Calycanthus floridus	Yes	No	No	No

As nouns, sweet shrub and Calycanthus floridus are synonyms defined as:

sweet shrub and Calycanthus floridus: hardy shrub of southeastern United States having clove-scented wood and fragrant red-brown flowers

Other synonyms of sweet shrub include Carolina allspice, strawberry bush, strawberry shrub.

sweet shrub (noun)	Calycanthus floridus (noun)
hardy shrub of southeastern United States having clove-scented wood and fragrant red-brown flowers	hardy shrub of southeastern United States having clove-scented wood and fragrant red-brown flowers