Certified nursing assistants may also be called a nursing assistant, a nurse’s aid, or a patient care assistant. CNAs work directly with patients and nurses, helping with the many physical and complex tasks for patient care.

Some of their responsibilities include:

• Turning or moving patients
• Gathering medical supplies
• Bathing patients
• Grooming patients by brushing their hair, teeth, shaving them, etc.
• Feeding patients and documenting their food and liquid intake
• Checking vital signs such as blood pressure and heart rate
• Answering patient calls
• Documenting information
• Cleaning rooms and bed linens
• Stocking supplies
• Assisting with some medical procedures
• Safety procedures
• Transporting patients
• Taking care of wounds"

Source: https://www.wgu.edu/blog/what-cna-job-description-career-guide2008.html#close