How many words could one make using the combination specified?On this page of words with 'gaz' at the start and 'o' at the end, you have 3 entries that are available.
What's the longest word you can make using this list?The longest word is 8 letters, which is 'gazpacho'.
What's the highest scoring word you can play in Scrabble ?As there is merely to pick from, you're only viable choice is 'gazpacho' scoring 25 points.