Is there a word on this page that sticks out as the most common?The most common word for your search is 'jam'.
Which word from this list has the highest character count?The longest word you can construct from words that start with 'ja' and include 'm' is 'jacamaralcyon', which consists 13 letters.
In total, how many words can one make using this list?From this list of words starting with 'ja' that contain 'm', Dictionarypedia has found 117 effective combinations that can be selected.
Is there a word from this page which could be deemed as unique?The most interesting word in this list is 'jamb'. 'Jamb''s definition is "1. (Arch) The vertical side of any opening, as a door or fireplace; hence, less properly, any narrow vertical surface of wall, as the of a chimney-breast or of a pier, as distinguished from its face. Gwilt. 2. (Mining) Any thick mass of rock which prevents miners from...", according to the dictionary.
In Scrabble, what is the highest number of points you can get from this list of words that start with 'ja' and contain 'm'?As there are an extensive 117 entries, your best option is 'jazzman' scoring 34 points overall.