citron vs mandarin orange

citron

• A small citrus tree, Citrus medica. 

• The fruit of a citron tree. 

• A greenish yellow colour. 

• The candied rind of the citron fruit. 

• Of a greenish yellow colour. 

mandarin orange

• A small citrus tree (Citrus reticulata) with fruit resembling the orange. 

• The fruit of this tree, smaller than an orange and oblate. In daily usage, it may include other similar citrus fruits like Citrus unshiu (satsuma or mikan) Citrus tangerina (tangerine).