Phrases:
* Power nap: A short nap taken for energy boost.
* Cat nap: A brief, light sleep.
* Nap time: A designated time for taking a nap, often for children.
* Nap sack: A small bag for carrying belongings while napping.
Compound words:
* Napkin: A small piece of cloth or paper used for wiping the mouth or hands. While "nap" is part of the word, it doesn't directly relate to the act of sleeping.
Other options:
* Siesta: A midday rest or nap, particularly in Spanish-speaking cultures.
* Snooze: To sleep lightly or briefly.
It's worth noting that "nap" itself is a relatively simple word, so it doesn't often combine with other words to create compound words.