Reading Between The Words

We're going to play a word game today. In today's Sporcle quiz, you're going to be given a pair of words in the Scrabble dictionary (4th edition, if that matters to you) that have a single word between them (plurals and verb tenses are disallowed). Your task is to provide that word. You're given 26 pairs, one per letter of the alphabet; you have 8 minutes.