Nod off and Take a siesta

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

Take a siesta and nod off are semantically related in nap topic. In some cases you can use "Take a siesta" instead a verb "Nod off", when it comes to topics like light sleep.

Nod off and take a siesta are semantically related in nap topic. You can use "Nod off" instead a verb phrase "Take a siesta", if it concerns topics such as light sleep.