scuttle

In intransitive terms the difference between shuttle and scuttle

is that shuttle is to go back and forth between two places while scuttle is to move hastily, to scurry.

In transitive terms the difference between shuttle and scuttle

is that shuttle is to transport by shuttle or by means of a shuttle service while scuttle is to deliberately sink one's ship or boat by any means, usually by order of the vessel's commander or owner.

As nouns the difference between scuttle and break

is that scuttle is a container like an open bucket (usually to hold and carry coal) or scuttle can be a small hatch or opening in a boat also, small opening in a boat or ship for draining water from open deck or scuttle can be a quick pace; a short run while break is break.

As a verb scuttle

is (nautical) to cut a hole or holes through the bottom, deck, or sides of (as of a ship), for any purpose or scuttle can be to move hastily, to scurry.