Frequency - Word Form
  19 o
  14 object
   1 objection
   1 objections
   1 objective
  21 objects
  11 obliged
   1 obligingly
   4 oblique
   1 obliquely
   2 obliquity
   2 oblong
   1 obscure
   1 obscurity
  16 observation
  22 observations
  16 observatory
  12 observe
  15 observed
   4 observer
  12 observers
   8 observing
   2 obstacle
   3 obstinately
   1 obtain
   2 obtained
   1 occasion
   1 occasioned
   1 occultation
  10 occupied
   3 occupies
   7 occupy
   1 occur
   1 occurred
  14 ocean
   1 oceanica
   5 oceans
   1 octant
   1 octants
   1 odd
   1 oeuvre
1861 of
  17 off
   1 offer
   2 offered
   1 office
   3 officer
  12 officers
   5 often
   8 oh
   1 ohio
  12 old
   3 older
 358 on
  22 once
 192 one
   1 one-fifth
   3 one-third
   3 ones
   6 oneself
 104 only
   2 onward
   1 opaque
  15 open
   7 opened
   8 opening
   2 openings
  12 operation
   3 operations
  16 opinion
   2 opinions
   1 opportune
   1 opportunity
  10 opposite
   4 opposition
   5 optical
 111 or
  39 orb
  15 orbit
   1 orbits
   4 orbs
  24 order
   1 orders
   4 ordinary
   3 organization
   3 organized
   1 organizing
   3 orifice
   5 origin
   1 original
   2 originally
   1 ornaments
   1 orographic
   4 orography
   1 oscillated
   1 oscillates
   1 oscillation
  67 other
  12 others
   1 otherwise
  27 ought
 117 our
   1 ours
  13 ourselves
  60 out
   4 outer
   2 outline
  11 outside
   3 oven
  50 over
   1 over-excitement
   1 over-running
   1 overcome
   2 overexcited
   1 overexcitement
   1 overflowed
   1 overflowings
   1 overloaded
   3 overlook
   4 overlooked
   1 overlooking
   1 overpowering
   2 owing
  15 own
   1 oxen
  17 oxygen