Frequency - Word Form
 58 object
  1 object-total
  2 objective
 34 objects
  2 observation
  3 observed
  2 obtain
  1 obvious
  2 obviously
  1 occupies
  1 occupy
  6 occur
  1 occurred
  1 occurrence
  1 occurrences
  2 occurs
  2 octave
  4 odd
 10 odorous
  1 odorousness
 41 odour
 21 odours
594 of
  4 off
  1 offensive
  1 offshoot
  2 often
  4 oil
  1 oily
  3 old
  4 olfactory
 56 on
  6 once
135 one
  1 oneness
 28 only
  1 onset
  1 operate
  1 operates
  2 opinion
  1 opposite
  1 optical
125 or
  5 order
  3 ordinary
 20 organ
  1 organic
  3 organisms
  7 organs
  1 originates
 50 other
 16 others
  2 otherwise
 21 our
  7 out
  2 outside
  1 outwardly
  1 overlaying
  1 owe
  8 owing
  6 own