National Health Service "NHS" can refer to the National Honor Society or the National Historical Society in America or the National Health Service in the UK. The acronym is also a common abbreviation for certain high schools around the world and local historical societies in the US.
What you called, "National Institution of health", is The National Institution of Health.
Science National Honor Society was created in 2000.
can I get treatment for corns on the National Health
National Secular Society was created in 1866.
National Geographic Society was created in 1888.
National Autistic Society's population is 3,172.
National Society of Accountants was created in 1945.
National Osteoporosis Society was created in 1986.
National Space Society was created in 1986.
National Audubon Society was created in 1905.
The National Society of Metal Mechanics was created in 1994.