Tumble, Stumble or Fall?

I arrived home yesterday to learn Merv had fallen at the HD social group.  His support worker who takes him home was with him but every staff member was busy elsewhere!  His support worker said he had a, 'tumble.'   I don't know what he meant by a tumble.  As a professional support worker I know what a fall is, but the word, 'tumble' is never used in falls training.  I needed further information and asked for a detailed description.  Merv did not tumble, he fell.  This is not unusual for people with HD, their balance is impaired.  Merv hit the floor landing on his shoulder.  He reacted quickly and managed to pull himself up with a little assistance from the support worker.  Merv did not suffer any injuries or loss of confidence, which I was grateful for.   The biggest problem was the communication between support worker and staff at the HD group.   The staff took the support worker's, 'tumble' to be a 'stumble', which is not a fall at all, more of a balance impairment but not hitting the floor.  I had hoped an overnight email would clarify this situation but unfortunately it didn't.  I rang the support worker who was again with Merv today to clarify once again before sending another email to confirm; yes it was a fall, not a stumble or a tumble!  Using the correct terminology will keep everyone on the same page, saving time and stress!