citron vs grapefruit

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. 

grapefruit

• The tree of the species Citrus paradisi, a hybrid of pomelo (Citrus maxima) and sweet orange. 

• The large spherical tart fruit produced by this tree.