Nod off and Zonk out

Nod off verb - Change from a waking to a sleeping state.

Zonk out and nod off are semantically related in suspend consciousness topic. In some cases you can use "Zonk out" instead a verb "Nod off".

Zonk out verb - Fall asleep fast, as when one is extremely tired.

Nod off and zonk out are semantically related in suspend consciousness topic. Sometimes you can use "Nod off" instead a verb "Zonk out".