Scrabble+Music Theory riddle

[averiguar]

You sit down to play a game of Scrabble with your senile aunt Delores.
You reach into the tile bag and pull out the letters A, B, C, D, E, F & G!
Instantly recognizing these as the notes of the musical scale, you ask yourself:

1. What are the longest words you can
spell using the letters given?
(Hint: there are TWO WORDS that are palindromes of each other when placed back-to-back...)

2. Using the words you've determined from the first question, 
what chord is created from the notes of
the letters of said words when played on an instrument?
(Hint: there are 5 notes in this chord)

??

[Groundy]

 Pass......

Alex

[Hilary]

Is it A?

[Hook]

Badge (Em11 or G6/9 or A9sus4)
Cafe
Dad
Cab
Faced (Dm9 or Fmaj13)

[ODH]

FACED:DECAF

[Hilary]

well if you're going to try . . .

CADGE
BADGE
FAG
BED
BEAD
FADE
FED
AGED
CAGED
BADE

[Hilary]

BAG/GAB

[Black Mary]

Decabbaged?  Apparently this was an old Heathen ritual before trousers were invented. 😣