差

chà
  1. different
  2. wrong; mistaken
  3. to fall short; to lack
  4. not up to standard; inferior
  5. Taiwan pr. chā

CEDICT

Homographs

差 chā
  1. difference; discrepancy
  2. (math.) difference (amount remaining after a subtraction)
  3. (literary) a little; somewhat; slightly
差 chāi
  1. to send (on an errand)
  2. (archaic) person sent on such an errand
  3. job; official post
差 cī used in 参差 cēncī