Words with 'fro' at the start and 'r' at the end

What word that starts with 'fro' and ends with 'r' is the most interesting?
One of the most weird words from this page is 'frontier'. According to the Oxford dictionary, 'frontier' is defined as "1. That part of a country which fronts or faces another country or an unsettled region; the marches; the border, confine, or extreme part of a country, bordering on another country; the border of the settled and cultivated part of a country; as, the frontier of civilization. 2. (Fort.) ...".

What is the longest word you can make using this list?
'frontoauricular'

Is there any word on this page that sticks out as the most common?
'Frontier' is the most popular word from this page, ranked 5887^th most common word.

In total, how many words are there using this combination of letters?
It's possible to derive 31 words with this combination.

What is the best score you could get in Scrabble from this list of words with 'fro' at the start and 'r' at the end?
From this combination, the best word to play is 'frowzier' scoring 23 points.