hydrofluosilicic acid vs fluosilicic acid

hydrofluosilicic acid and fluosilicic acid both are nouns.

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

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

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

hydrofluosilicic acid (noun)	fluosilicic 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