build a bridge
A stream of water cutting through land is a river.
"burble" refers to the gentle sound of water ruining in a stream/brook or when someone gets exited when they are talking and start talking too much and too fast.
fast
How fast lathes, cutting speed can be fast, it has a relationship with the feed amount and diameter.
Fast moving stream
rivulet Rex Drew South Africa
A wide stream valley has gently sloping sides and a broad, flat floor due to erosion over time by a large volume of water. In contrast, a narrow stream valley has steep, V-shaped sides and a narrow floor formed by fast-flowing water cutting through the landscape.
Most likely a fast moving stream.
Narrow valley.
drift
No, it does not