length
The answer is AREA
It is misleading to use the mean as a descriptor of a data set when the median or mode would be more representative of the data set as a whole.
Caption, title, headline, descriptor...
There are 500 meters in a half kilometer; a kilometer is 1,000 meters.
length
volume
the answer is area
The answer is AREA
In computer programming, a file descriptor (FD) is an abstract indicator for accessing a file. The term is generally used in POSIX operating systems.
The term blue ice is a nice descriptor for Antarctica
Volume.
kilo kilometer kilometer
"Liters" is a unit of measurement in the metric system used to measure volume.
It is a derived unit in which area may be measured.
When used in medical terminology, dribbling is usually used as a descriptor for a poor or weak urinary stream.
"Unlikely" is not really an accurate maths term, since a number probability cannot be assigned to it. It is a descriptor rather than a mathematical term.