types:
coverage
the extent to which something is covered
frontage
the extent of land abutting on a street or water
length
the property of being the extent of something from beginning to end
brink,
cusp,
verge
the limit beyond which something happens or changes
contrast
the range of optical density and tone on a photographic negative or print (or the extent to which adjacent areas on a television screen differ in brightness)
latitude
scope for freedom of e.g. action or thought; freedom from restriction
gamut
a complete extent or range: "a face that expressed a gamut of emotions"
spectrum
a broad range of related objects, values, qualities, ideas, or activities
palette,
pallet
the range of colour characteristic of a particular artist or painting or school of art
acreage,
land area
an area of ground used for some particular purpose (such as building or farming)
draft,
draught
the depth of a vessel's keel below the surface (especially when loaded)
penetration
the depth to which something penetrates (especially the depth reached by a projectile that hits a target)
sounding
a measure of the depth of water taken with a sounding line
erasure
a surface area where something has been erased
space
one of the areas between or below or above the lines of a musical staff
balk,
baulk
the area on a billiard table behind the balkline
segment
the area of a circle bounded by a chord and an arc of the circle