How many words are possible to make using the combination searched for?You could make 3 words using the specified combination.
How many letters does the biggest word on this page consist of?The biggest word that's possible to construct from words that start with 'kid' and end with 'n' is 'kiddushin', and it has 9 characters.
What's the highest scoring word you can play in Scrabble ?As there are only 3 results to pick from, your only viable word is 'kidskin' which totals 16 points.