A hydraulic hose is specifically designed to convey hydraulic fluid to or among hydraulic components, valves, actuators, and tools. It is typically flexible, often reinforced, and usually constructed with several layers of reinforcement since hydraulic systems frequently operate at high or very high pressures.
Hose is typically used for high pressure applications, while unreinforced tubing is usually used for gravity flow or lower pressure applications. There are also many applications in which either would be suitable. The important thing is to check the manufacturer's specifications on the hose or tubing you select.