Center letter: a
Outer letter: g h l m o r
Answers (53):
  hologram
  aargh
  agar
  agog
  agora
  alarm
  alga
  algal
  aloha
  amalgam
  ammo
  amoral
  armor
  aroma
  gaga
  gala
  gall
  gamma
  glam
  glamor
  goal
  gram
  gramma
  grammar
  halal
  hall
  halo
  haram
  harm
  hoar
  hoorah
  hora
  lama
  largo
  llama
  loam
  logogram
  magma
  mall
  mama
  mamma
  mammal
  mammogram
  marm
  molar
  momma
  moola
  moolah
  moral
  oral
  raga
  roam
  roar