ADP vs nucleotide

ADP and nucleotide both are nouns.

Word	Noun	Adjective	Verb	Adverb
ADP	Yes	No	No	No
nucleotide	Yes	No	No	No

As nouns, nucleotide is a hypernym of ADP; that is, nucleotide is a word with a broader meaning than ADP:

ADP: an ester of adenosine that is converted to ATP for energy storage
nucleotide: a phosphoric ester of a nucleoside; the basic structural unit of nucleic acids (DNA or RNA)

Other hypernyms of ADP include base.

ADP (noun)	nucleotide (noun)
data processing by a computer	a phosphoric ester of a nucleoside; the basic structural unit of nucleic acids (DNA or RNA)
an ester of adenosine that is converted to ATP for energy storage