Hiatus

Etymology

From Latin hiatus, "an opening, gap, aperture," from hiare, "to gape, to yawn." The literal sense is a physical gap or opening. English first used it for a gap or missing portion in a text or manuscript, then broadened it to any interruption in time — a pause after which things are expected to continue.

noun · /hy-AY-tuhs/
A pause or gap in continuity, a break in an otherwise ongoing sequence.
What it names
The word for a temporary interruption with the expectation of resuming — a show on hiatus, a career hiatus — an empty stretch between two active periods.
Example
After a two-year hiatus to raise her children, she returned to research as though she had never left.
Related idea
Interlude is a filled interval, something that happens between two main events; a hiatus is an empty one, a suspension in which the main activity simply stops.