That part of the riddle was sword anyway. The riddle said letters 4 through 8 spelled a weapon, not just letters 5 through 8. So yeah, brae messed up with the right answer.
I lack much reason and require logic to pass the time
To get the words to tell your kin
Look for clues that lie within
Though all are different, they act the same
The answer is practically in the name
What am I?
Graahh... trying to wrap my head around this one... my thoughts wandered to some sort of collective or gathering of many "to get the words to tell your kin"... High school drifted through my mind "though all are different, they act the same," but that doesn't match with the rest of the riddle... "answer in practically name" well of course it is, because the name is the answer... what kind of clue is that? Unless it's riddle as Lints guessed, being the fact that it is a riddle making it the answer.