Magnolia grandiflora vs large-flowering magnolia

Magnolia grandiflora and large-flowering magnolia both are nouns.

Word	Noun	Adjective	Verb	Adverb
Magnolia grandiflora	Yes	No	No	No
large-flowering magnolia	Yes	No	No	No

As nouns, Magnolia grandiflora and large-flowering magnolia are synonyms defined as:

Magnolia grandiflora and large-flowering magnolia: evergreen tree of southern United States having large stiff glossy leaves and huge white sweet-smelling flowers

Other synonyms of Magnolia grandiflora include bull bay, evergreen magnolia, southern magnolia.

Magnolia grandiflora (noun)	large-flowering magnolia (noun)
evergreen tree of southern United States having large stiff glossy leaves and huge white sweet-smelling flowers	evergreen tree of southern United States having large stiff glossy leaves and huge white sweet-smelling flowers