Nothing flat and Sec

Sec and nothing flat are semantically related in moment topic. In some cases you can use "Sec" instead a noun phrase "Nothing flat", when it comes to topics like brief time period, shortest interval of time.

Sec noun - 1/60 of a minute; the basic unit of time adopted under the Systeme International d'Unites.

Nothing flat and sec are semantically related in moment topic. You can use "Nothing flat" instead a noun "Sec", if it concerns topics such as brief time period, shortest interval of time.