There are 699 possible words, so I'm only including the longest ones:
AirWays
forehead
8 different 4-letter words can be formed from the letters of the word "Nation".
Librarian is a 9 letter word that has letters BRAIN in it.
The seven letters, mcuanst, can be formed into the seven letter word, sanctum. Sanctum is an English word meaning 'a sacred place.'
Since we have to use each letter only once.. two words can be made from these letters - at , sound
Sinkage is the seven letter word formed using the letters aeigkns.
Any letter that can be formed using a single stroke, as in the letter "I", "u""j""s" etc
discant
panther
monitor
cantdogcoagentcognatecommandcommendcommentcongaeddecagondogfacefagotedmagnetomegatonmetonymmomentamontagetacnodetangoed
savages
stuck
ceramic, grimace
coacted
char