Frequency - Word Form
  2 raise
  2 raised
  1 raises
  4 rapid
  3 rapidly
  1 rate
  3 rather
  1 rationally
  1 readily
  1 reality
  2 really
 22 reason
  2 reasonable
  3 reasons
  1 received
  2 receives
  1 receiving
  3 receptacle
  1 recesses
  1 reciprocal
  1 recoil
  2 reduces
  1 reed
  1 refer
  1 reference
  1 refinement
 32 refrigeration
  1 refuse
  1 regard
 10 region
  1 region-but
  2 regions
  1 reinforcement
  1 relative
  4 relatively
  1 relegate
  1 relevant
  5 remain
  4 remains
  1 remarked
  3 removed
  1 repeat
  1 replacement
  6 require
  1 required
  2 requires
  3 resident
  1 resides
  1 residual
  1 residues
  1 resist
  3 respect
  1 respectively
 41 respiration
  1 respiratory
 15 respire
  1 respire-as
  1 respire-which
 11 respiring
  1 rest
  1 restrains
  7 result
  7 results
  2 retain
  1 retardation
  1 retreats
  1 return
  1 returns
  2 reverse
  1 revive
  1 revolutions
  6 rise
  4 rises
  1 rising
  1 river
  1 roof
  5 root
  3 roots
  1 round
  1 route
  1 run
  2 runs
  1 rush
  1 rushes
  3 rushing