Which word that starts with 'i' and includes 'era' is the most common word?A popular word for the combination you requested is 'innumerable'.
What's the longest word you can construct from words that start with 'i' and include 'era'?The longest word is 18 characters, which is 'inconsiderableness'.
What is the highest number of points you could get in Scrabble using this list of words that start with 'i' and include 'era'?With numerous words to choose from, your best choice is to consider 'iterancy' which scores 13 points in total.
How many possible words can you make using this combination of letters?It's possible to make 361 words from this combination.
What is an example of a interesting word from this list?A good example of an unusual word from this page goes to 'itinerantly'. The conventional definition of 'itinerantly' is as follows: "In an itinerant manner.". Source Cambridge Dictionary.