Which molecules are in both ATP and ADP?

The molecules found in both ATP and ADP are adenine, ribose, and phosphate groups.

ATP or adenosine triphosphate is composed of one adenine molecule, a ribose sugar and three phosphate groups. Its chemical formula is C₁₀H₁₆N₅O₁₃P₃.

ADP or adenosine diphosphate is composed of one adenine molecule, a ribose sugar and two phosphate groups. Its chemical formula is C₁₀H₁₅N₅O₁₀P₂.