Rill is another word for stream
The path that a stream follows is a channel.
velocity
term
Dead letter mail
It may be a motu proprio or an encyclical, depending upon the purpose.
A literary term for a small stream is "brook."
Well, you're thinking about "volume", but in music equipment, they are not the same. Volume describes how loud the equipment is. Loudness is a term that describes a process which makes the high notes and the very low notes louder at a low volume level.
Cost Flow Assumption
Which geometric term describes a ruler
In mathematics the term quadratic describes something that pertains to squares. (quadratus is Latin for square)
The parallelogram and the kite both fit that description.
The term that best describes the movement is gradual.