Citrus medica vs citron

Citrus medica and citron both are nouns.

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

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

Citrus medica and citron: 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 tree.

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