Words with 'n' as the first letter that end with 'ap'

What is the biggest word you can derive using the combination searched for?
The longest word is 11 letters long, which is 'nonhandicap'.

How many viable words can you put together using this combination of letters?
In total, one can assemble up to 5 words.

What is the most common word that starts with 'n' and ends with 'ap'?
As far as popular words go, there's 'nap', which is the 19011^th most common word.

Is there a specific word from this page of word that starts with 'n' and ends with 'ap' which might be thought of as unusual?
By far the most strange word from this list is 'neap'. According to the Oxford dictionary, 'neap' is defined as "The tongue or pole of a cart or other vehicle drawn by two animals. [U.S.] Low. Neap tides, the lowest tides of the lunar month, which occur in the second and fourth quarters of the moon; -- opposed to spring tides. A neap tide. High springs and dead neaps. Harkwill.".

What's the highest number of points you're able to get in Scrabble from this list of words with 'n' as the first letter that end with 'ap'?
One could make 'nightcap' for a total of 16 points in Scrabble.