Words with 'nei' at the start and 's' at the end

Which word that starts with 'nei' and ends with 's' is the most unusual?
Our team thinks 'neighborliness' to be the most unusual word you can construct. According to the Oxford dictionary, 'neighborliness' is defined as "The quality or state of being neighborly.".

In total, how many words is it possible to make using the combination requested?
There are 12 words you're able to use for words that start with 'nei' and end with 's'.

Which word that starts with 'nei' and ends with 's' is the most common word?
We're able to confirm that 'neighbors' is the 5976^th most common word.

Which word from this list is made up of the largest number of characters?
The longest word is 16 characters, which is 'neighborlikeness'.

In Scrabble, what's the best score you can get from this list of words that start with 'nei' and end with 's'?
Our suggestion for a total of 10 points is the word 'neighs'.