What's the difference between thereunder and whereon?

Thereunder


Definition:

  • (adv.) Under that or this.

Example Sentences:

  • (1) Case 1: mild weakness in right upper and lower limbs and left small hand muscles, mild superficial and deep sensory disturbance on bilateral palms and soles and decrease of vibration on bilateral lumbar regions and thereunder.

Whereon


Definition:

  • (adv.) On which; -- used relatively; as, the earth whereon we live.
  • (adv.) On what; -- used interrogatively; as, whereon do we stand?

Example Sentences:

  • (1) With the patient in a supine position, the droplets could be positioned over the macula in the preretinal vitreous space, whereon the FTBA PO2 could be influenced by the preretinal oxygen concentration.
  • (2) The heart was the only one of all the internal organs whereon significant pathologic changes were observed during autopsy.