0 abbreviation for Health and Safety Authority: in some countries, the government organization that deals with preventing industrial accidents or finding out what caused them, the health of workers, etc.:
The HSA has overall responsibility for the administration and enforcement of health and safety at work in Ireland.
1 abbreviation for Health Savings Account
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.