Solution

FUEL

2 clues

Gasoline, e.g.

Word class: Common noun
Nature of clue: Example
Difficulty: Very easy
Sources: Boatload Puzzles
Topics: Technology, Vehicles - Transportation

Power source

Word class: Common noun
Nature of clue: Description
Difficulty: Very easy
Sources: Boatload Puzzles

Other solutions to Power source

Words are categorized by artificial intelligence: there can be mistakes.