Fount and Mainspring

Fount noun - A plumbing fixture that provides a flow of water.

Mainspring and fount are semantically related In some cases you can use "Mainspring" instead a noun "Fount".

Nearby Word: fountain

Mainspring noun - The most important spring in a mechanical device (especially a clock or watch); as it uncoils it drives the mechanism.

Fount and mainspring are semantically related in motive topic. You can use "Fount" instead a noun "Mainspring", if it concerns topics such as origin, source.