nail set: A short tool with a blunt pointed tip that is used for pushing the head of a nail or brad into wood.

nap: Low- to high-pile carpets have a nap. You have to put the patch in so that the nap runs in the same direction; otherwise, it will look different from the rest of the carpet.

National Electric Code (NEC): The NEC is the legally defined code that determines how electricity and electrical fixtures need to be used to ensure safety.

National Fire Prevention Association (NFPA): The NFPA is an organization created to establish rules and guidelines that will help to prevent fires.

natural bristle brush: A natural bristle brush is a paintbrush that uses hairs from animals. They are the best brushes for oil-based paints and varnishes.

Navajo-blanket print: A series of traditional geometric designs used on Navajo blankets.

non-slip silicate: Some floor paints (epoxy, for one) look fabulous and hold up to wear but are slippery when painted on concrete, even when they’re dry. Reduce the risk of slipping by adding nonslip silicate to the paint before you roll it on.