Interregnum and Lacuna

Interregnum noun - A break in continuity.

Lacuna and interregnum are semantically related. in break topic. In some cases you can use "Lacuna" instead a noun "Interregnum", when it comes to topics like interval, wait.

Lacuna noun - A falling short of an essential or desirable amount or number.

Interregnum and lacuna are semantically related. Sometimes you can use "Interregnum" instead a noun "Lacuna".