A person who provides care, typically for the elderly, disabled, or chronically ill. Often used in healthcare and social welfare contexts.
My grandmother's caregiver is very kind.
Support is needed to reduce the burden on caregivers.
看護師 is a licensed nurse, typically in a medical setting. 介護者 is a broader term for any caregiver, including family members and non-medical care workers.
care recipient; person receiving care
Compound of 介護 (かいご, 'nursing, care') and 者 (しゃ, 'person').