Care Providers are usually non-qualified and are best suited for basic healthcare and assistance to the elderly's. They can be better suited in comparison as they may assist in variety of other general activities like cooking, clothing etc. They are best said as companions.
Go for attendants if your elder do not need any nursing procedures and if you are looking for cost effective companionship.
Normally attendant charge on per hour basis (besides some fixed component). You can hire them for as low as 1 hour; or upto 8 / 10 / 12 hours. They can be hired for lookafter every night and can stay alongside day & night.
Qualified and skilled medical professionals who hold degree or diploma in nursing care. It's like appointing a hospital like nurse for care for your patient in home. If your patient is in need of advanced medical care at home in the supervision of a doctor then go for a nurse.
Be aware that Nurse's first priority is skilled care. Do not expect them to do activities generally unrelated to healthcare like cooking etc.
You can request a nursing visit for a quick injection or it can be full day care / care during night / round the clock resident care. Usually nurses team up for round the clock care on rotation basis (12 hours each). If patient is not very critical, you can opt for a single resident nurse.