How are airship and modern-day blimps the same?

Airships and modern-day blimps are similar in that they both utilize lighter-than-air gases, such as helium or hydrogen, to achieve buoyancy and facilitate flight. Both types of aircraft are typically non-rigid, meaning they rely on the pressure of the gas to maintain their shape rather than a solid framework. Additionally, both can be used for various purposes, including advertising, surveillance, and tourism. Ultimately, they share a common design principle centered around buoyancy and aerial navigation.