fluosilicic acid vs hydrofluosilicic acid

fluosilicic acid and hydrofluosilicic acid both are nouns.

Word	Noun	Adjective	Verb	Adverb
fluosilicic acid	Yes	No	No	No
hydrofluosilicic acid	Yes	No	No	No

As nouns, fluosilicic acid and hydrofluosilicic acid are synonyms defined as:

fluosilicic acid and hydrofluosilicic acid: an unstable poisonous corrosive acid known primarily in the form of its salts

fluosilicic acid (noun)	hydrofluosilicic acid (noun)
an unstable poisonous corrosive acid known primarily in the form of its salts	an unstable poisonous corrosive acid known primarily in the form of its salts