Words that contain 'in' and end in 'a'

Is there any word on this page that stands out as the most popular?
There's 'china' which ranks as the 11698^th most popular word.

What is an unusual word that has 'in' in and ends with 'a'?
There are numerous peculiar words in this list, that being said our favorite word currently is 'vaginicola'. 'Vaginicola' is defined as "A genus of Infusoria which form minute vaselike or tubular cases in which they dwell.", according to the dictionary.

What is the highest number of points you could get in Scrabble from this list of words containing 'in' and ending with 'a'?
Since there are so many words to decide on, we'd advise selecting 'qindarka' scoring 22 points.

In total, how many words is it possible to make using this combination of letters?
You can select up to a maximum of 1,231 entries addressing your query.

What is the longest word you can derive using words that have 'in' in and end with 'a'?
'Hypercholesterinemia' is the biggest word that our database could assemble. It consists of 20 letters.