Words that start with 'c' and contain 'ls'

Is there a word on this page that jumps out as the most common?
There's 'calls', which ranks as the 2439^th most popular word.

How many words are possible to make using these particular combinations of letters?
From this list of words starting with 'c' that contain 'ls', Dictionarypedia has found 255 combinations that are available in total.

What is the highest scoring word you can play in Scrabble ?
As there are an extensive 255 entries, it's best to go for 'coequals' which scores 19 points in total.

How many letters are in the biggest word on this list?
The word 'constitutionals' is made up of 15 characters.

Is there a word from this page of word that starts with 'c' and includes 'ls' which might be thought of as unique in any regard?
There are many unusual words on this page, however our favorite word right now is 'coalsack'. The definition of 'coalsack' is as follows: "Any one of the spaces in the Milky Way which are very black, owing to the nearly complete absence of stars; esp., the large space near the Southern Cross sometimes called the Black Magellanic Cloud.". Credit to the Cambridge Dictionary.