Words that start with 'bar' and contain 'r'

Which word that starts with 'bar' and includes 'r' is the most common word?
There's 'barren' which is the 6153^rd most common word.

What is the longest word you can make from the combination specified?
The biggest word on this list is 'barothermohygrograph', which contains of 20 characters

What's an unusual word from the word combos possible ?
One example of an uncommon word from this page goes to 'barrack'. The dictionary defines it as "1. (Mil.) A building for soldiers, especially when in garrison. Commonly in the pl., originally meaning temporary huts, but now usually applied to a permanent structure or set of buildings. He lodged in a miserable hut or barrack, composed of dry branches and thatched with straw. Gibbon. 2. A...".

What is the highest score you're able to get in Scrabble using this list of words that start with 'bar' and contain 'r'?
Given there are plenty of words from which to select, we would suggest choosing 'barkary' scoring 16 points.

How many words is it possible to make using these particular combinations of letters?
In total, you can make 308 words.