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

What's the longest word you can derive from this list?
'calcaneoastragalar' (18 characters)

What is the max number of words you're able to create from words that start with 'cal' and end with 'r'?
It's possible to make 60 words using the specified combination.

What's the highest scoring word you can play in Scrabble ?
For a score of 15 points, one can use 'calypter'.

What word that starts with 'cal' and ends with 'r' is the most unusual?
The most strange word in this list is 'calender'. The general definition of 'calender' is as follows: "1. A machine, used for the purpose of giving cloth, paper, etc., a smooth, even, and glossy or glazed surface, by cold or hot pressure, or for watering them and giving them a wavy appearance. It consists of two or more cylinders revolving nearly in contact, with the necessary apparatus...". Source Oxford Dictionary.

Which word on this page ranks as the most common?
The most popular word in the dictionary is 'calendar', which in fact is the 14081^st most common word in the dictionary.