Ravaging: causing destruction, destroying something
The Vikings are known for ravaging many towns and villages.

Ravishing: taking by force; raping. It is more commonly used to mean ‘of great beauty and delight’ which derives from women of great beauty ‘raping’ men of their senses with their beauty!
Ravishing rich women was one of the old pirate’s delights.

Ravenous: very hungry {as hungry as a beast came from the devouring aspect of ravish.}
They were ravenous after their long hike.