cucumber tree vs Magnolia acuminata

cucumber tree and Magnolia acuminata both are nouns.

Word	Noun	Adjective	Verb	Adverb
cucumber tree	Yes	No	No	No
Magnolia acuminata	Yes	No	No	No

As nouns, cucumber tree and Magnolia acuminata are synonyms defined as:

cucumber tree and Magnolia acuminata: American deciduous magnolia having large leaves and fruit like a small cucumber

cucumber tree (noun)	Magnolia acuminata (noun)
American deciduous magnolia having large leaves and fruit like a small cucumber	American deciduous magnolia having large leaves and fruit like a small cucumber