diol vs dihydric alcohol

diol and dihydric alcohol both are nouns.

Word	Noun	Adjective	Verb	Adverb
diol	Yes	No	No	No
dihydric alcohol	Yes	No	No	No

As nouns, diol and dihydric alcohol are synonyms defined as:

diol and dihydric alcohol: any of a class of alcohols having 2 hydroxyl groups in each molecule

Other synonyms of diol include glycol.

diol (noun)	dihydric alcohol (noun)
any of a class of alcohols having 2 hydroxyl groups in each molecule	any of a class of alcohols having 2 hydroxyl groups in each molecule