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Engine (Noun)

Something used to achieve a purpose; "an engine of change".

Nouns denoting natural phenomena.

Education is often seen as an engine of social mobility, allowing individuals to improve their socio-economic status.
The company's innovative marketing strategy was the engine that drove their rapid growth and success.
The internet has become a powerful engine of economic development, enabling businesses to reach a global audience.
The non-profit organization's mission is to be an engine of positive change in the community, addressing issues such as poverty and inequality.
The city's vibrant arts scene is an engine of cultural development, attracting tourists and new residents to the area.

Motor that converts thermal energy to mechanical work.

Nouns denoting man-made objects.

The car's engine was roaring as it sped down the highway.
The engineer carefully designed the engine to maximize efficiency and power.
The diesel engine in the truck was much more fuel-efficient than the gasoline engine in the car.
The engine of the motorcycle was revving loudly as the rider prepared to take off.
The old engine in the airplane had been replaced with a new one to ensure safe flight.

An instrument or machine that is used in warfare, such as a battering ram, catapult, artillery piece, etc.; "medieval engines of war".

Nouns denoting man-made objects.

The ancient Greeks developed advanced engines of war, including catapults and ballistae, to breach enemy fortifications.
Medieval armies employed various engines of war, such as trebuchets and mangonels, to attack and defend castles.
The introduction of gunpowder led to the development of new engines of war, including cannons and howitzers.
During the siege of Constantinople, the Ottoman Empire deployed massive engines of war, including giant cannons and catapults.
The invention of the tank marked a significant shift in the design of modern engines of war, emphasizing mobility and firepower.

A wheeled vehicle consisting of a self-propelled engine that is used to draw trains along railway tracks.

Nouns denoting man-made objects.

The diesel engine chugged along the tracks, hauling a long line of freight cars behind it.
Locomotive engineers are trained to operate the complex engine systems that power modern trains.
The old steam engine was a marvel of its time, but it has since been replaced by more efficient models.
Railway workers carefully inspected the engine before each trip to ensure it was in good working order.
The engineer expertly throttled the engine to maintain a steady speed as the train climbed the steep grade.