what are the differences between nucleoside and nucleotide ?

plzzzz answer as soon as possible

nucleoside consists of a nitrogenous base covalently attached to a sugar (ribose or deoxyribose) but without the phosphate group. A nucleotide consists of a nitrogenous base, a sugar (ribose or deoxyribose) and one to three phosphate groups.

Nucleoside = Sugar + Base 
Nucleotide = Sugar + Base + Phosphate

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