When I write text messages on my mobile phone I just need to press each key once for each letter and it automatically finds the most likely word that fits the combination (abc=2, def=3, ghi=4, jkl=5, mno=6, pqrs=7, tuv=8, wxyz=9). So if I press 84373 it displays "there", although the word could as well be "these".
What is the longest pair of English words that have the same number combination, while having no common letter in the same position?
Note: The words must occur in the Merriam Webster dictionary; only uncapitalized words; no hyphens.