spans >> span
Definition: [noun] the full extent of something from end to end; the amount of space that something covers.
Example: a warehouse with a clear span of 28 feet
Definition: [noun] the length of time for which something lasts.
Example: a short concentration span
Definition: [verb] (of a bridge, arch, etc.) extend from side to side of.
Example: the stream was spanned by a narrow bridge
Definition: [verb] extend across (a period of time or a range of subjects).
Example: their interests span almost all the conventional disciplines