nucleic acid vs macromolecule

nucleic acid and macromolecule both are nouns.

Word	Noun	Adjective	Verb	Adverb
nucleic acid	Yes	No	No	No
macromolecule	Yes	No	No	No

As nouns, macromolecule is a hypernym of nucleic acid; that is, macromolecule is a word with a broader meaning than nucleic acid:

nucleic acid: (biochemistry) any of various macromolecules composed of nucleotide chains that are vital constituents of all living cells
macromolecule: any very large complex molecule; found only in plants and animals

Other hypernyms of nucleic acid include supermolecule.

nucleic acid (noun)	macromolecule (noun)
(biochemistry) any of various macromolecules composed of nucleotide chains that are vital constituents of all living cells	any very large complex molecule; found only in plants and animals