Citrus medica vs citron tree

Citrus medica and citron tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
Citrus medica	Yes	No	No	No
citron tree	Yes	No	No	No

As nouns, Citrus medica and citron tree are synonyms defined as:

Citrus medica and citron tree: thorny evergreen small tree or shrub of India widely cultivated for its large lemonlike fruits that have thick warty rind

Other synonyms of Citrus medica include citron.

Citrus medica (noun)	citron tree (noun)
thorny evergreen small tree or shrub of India widely cultivated for its large lemonlike fruits that have thick warty rind	thorny evergreen small tree or shrub of India widely cultivated for its large lemonlike fruits that have thick warty rind