ATP vs adenosine triphosphate

ATP and adenosine triphosphate both are nouns.

Word	Noun	Adjective	Verb	Adverb
ATP	Yes	No	No	No
adenosine triphosphate	Yes	No	No	No

As nouns, ATP and adenosine triphosphate are synonyms defined as:

ATP and adenosine triphosphate: a nucleotide derived from adenosine that occurs in muscle tissue; the major source of energy for cellular reactions

ATP (noun)	adenosine triphosphate (noun)
a nucleotide derived from adenosine that occurs in muscle tissue; the major source of energy for cellular reactions	a nucleotide derived from adenosine that occurs in muscle tissue; the major source of energy for cellular reactions