Words ending in 'rno'

How many words are possible to put together using this combination of letters?
There are up to a maximum of 13 entries for this page.

Which word that ends with 'rno' is the most common word?
As far as popular words go, there's 'inferno' which ranks as the 76937^th most common word.

How many characters are in the longest word on this list?
'Caliburno' is the largest word that the Dictionarypedia database could construct. It has 9 characters.

What's a peculiar word on this list of words that end with 'rno'?
One of the most unusual words from this page is 'inferno'. According to the English dictionary, 'inferno' is defined as "The infernal regions; hell. Also used fig. At each sudden explosion in the inferno below they sprang back from the brink [of the volcanic crater]. D. C. Worcester.".

What is the highest scoring word in Scrabble you can play for ?
From this combination of letters, the best word to play is 'chaperno' for a total score of 15 points.