scale

noun / verb

Meaning

nounAn ordered, usually numerical sequence used for measurement; means of assigning a magnitude.
Example: Please rate your experience on a scale from 1 to 10.
verbTo change the size of something whilst maintaining proportion; especially to change a process in order to produce much larger amounts of the final product.
Example: We should scale that up by a factor of 10.
nounPart of an overlapping arrangement of many small, flat and hard pieces of keratin covering the skin of an animal, particularly a fish or reptile.

Source: Wiktionary (CC BY-SA 4.0)

How common: Very common; #216 of 8,600 five-letter words by how often they're used; Can be a Play Five answer
As a first guess: Tests likely letters better than 97% of common five-letter words.; Vowels: 2 · Different letters: 5 · Repeated letters: None