Difference between Hydrocyanic Acid and Hydrogen Cyanide

HYDROCYANIC ACID vs HYDROGEN CYANIDE: NOUN

A solution of hydrogen cyanide, HCN, in water; a weak poisonous acid, used as a fumigant
An aqueous solution of hydrogen cyanide.
A solution of hydrogen cyanide in water; weak solutions are used in fumigating and in the synthesis of organic compounds

A colourless, very poisonous, volatile liquid, HCN, used in the production of dyes, plastics and fumigants; it dissolves in water to form hydrocyanic acid and reacts with bases to form cyanides, and with some organic compounds to form nitriles.
A colorless, volatile, extremely poisonous flammable liquid, HCN, miscible in water and used in the manufacture of dyes, fumigants, and plastics. It has an almondlike odor and becomes a gas at 26°C.
A highly poisonous gas or volatile liquid that smells like bitter almonds; becomes a gas at around 90 degree fahrenheit and is most dangerous when inhaled; the anhydride of hydrocyanic acid; used in manufacturing

Sulfonic acid, Potassium carbonate, Acaricide, Cyanides, Zinc sulphate, Nitric, Ammonium chloride, Phosphine, Benzoates, Glycoside, Sulfoxide, Saponin, Raffinate, Hydrogen cyanide, Prussic acid

Carbon monoxide, Hydroxyl radical, Sarin, Hydrogen sulfide, Nuclides, Phosphine, Oxidizing agent, Nitrous acid, Gases, Arsine, Carbon disulfide, Sulfuric, Hydrogen chloride, Prussic acid, Hydrocyanic acid

Sulfonic acid, Potassium carbonate, Acaricide, Cyanides, Zinc sulphate, Nitric, Ammonium chloride, Phosphine, Benzoates, Glycoside, Sulfoxide, Saponin, Raffinate, Hydrogen cyanide, Prussic acid

Methyl chloride, Carbon monoxide, Hydroxyl radical, Hydrogen sulfide, Nuclides, Phosphine, Oxidizing agent, Nitrous acid, Gases, Arsine, Carbon disulfide, Sulfuric, Hydrogen chloride, Prussic acid, Hydrocyanic acid

The whitish latex that exudes from a cut plant contains hydrocyanic acid, a deadly poison used by Brazilian Indians to make poisoned arrows.
Unless you ferment it or prepare it, let all of the hydrocyanic acid evaporate for three days.
Such syrup products do not contain significant levels of hydrocyanic acid, so are generally considered safe for human consumption.
Prussian blue is a source for a deadly toxin, hydrocyanic acid.
Pathology of the brain in acute hydrocyanic acid poisoning in sheep.
Cyanogen and hydrocyanic acid, recognizable by their odour, indicate decomposable cyanides.
Only water solutions of HCN are referred to as hydrocyanic acid.

And, yes, hydrogen cyanide is definitely a poison.
Smoke contains benzene, nitrosamine, formaldehyde and hydrogen cyanide.
Fluorine; Bromine; Ethylene oxide; Arsine; Hydrogen cyanide; Sulfur dioxide; Chlorine; Ozone; Nitrogen dioxide; Nitrogen monoxide; Carbon Monooxide; Phosgene; Phosphine; Hydrogen sulfide.
Currently, the injection of waste water containing hydrogen cyanide and cyanide compounds through underground injection is a major method for disposal of these wastes.
In this research, a dual fixed-film bioscrubber was applied for hydrogen cyanide and hydrogen sulfide gases removal.
Diseases caused by asphyxiants: carbon monoxide, hydrogen cyanide or its toxic derivatives, hydrogen sulfide.
Sodium cyanide releases highly flammable and toxic hydrogen cyanide gas on contact with acids or water.
Mercuric Cyanide should not contact acid or heat because it will release flammable Hydrogen Cyanide gas.
Cyanide poisoning is mainly attributed to hydrogen cyanide.
Astronomers say the hydrogen cyanide comets cyanogen gas mixed with water forms hydrogen cyanide causing death.