Which word on this page stands out as the most common?The most well-known word for your request is 'key'.
What is the best score you're able to get in Scrabble from this list of words that start with 'key'?For 22 points, one can use 'keypunch'.
How many letters are in the largest word from this list?'Keynesianism' is the largest word that Dictionarypedia could find, containing 12 characters
How many words could one make using the combination of letters requested?You can go with up to 59 entries covering all variations.
What is a strange word on this page of words that start with 'key'?One of the most interesting words from this list of words that start with 'key' is 'keyhole'. The definition of 'keyhole' is as follows: "1. A hole or apertupe in a door or lock, for receiving a key. 2. (A) (Carp.) A hole or excavation in beams intended to be joined together, to receive the key which fastens them. (B) (Mach.) a mortise for a key or cotter. Keyhole limpet (Zoöl.), a marine gastropod...". Credit goes to Cambridge Dictionary.