In total, how many words are there using the combination requested?You can assemble 1,663 words from the letter combination you asked for.
In Scrabble, what is the highest score possible using this list of words that contain 'r' and end in 'ae'?With an enormous 1,663 entries, your best option is to go for 'exhedrae' which scores 19 points.
Which word in particular from this list contains the highest number of letters?'chlamydobacteriaceae' (20 letters)
Which word from this page is the most unusual?A good example of a weird word from this list goes to 'grallae'. It is defined as "An order of birds which formerly included all the waders. By later writers it is usually restricted to the sandpipers, plovers, and allied forms; -- called also Grallatores.".
What's the most common word on this page?A well-known word for the combination you requested is 'frae'.