Nurse: verb or noun, which came first?

[Jennaluvsbabies]

First, I want to state my complete lack of knowledge when it comes to nursing, as I am just beginning my journey. So, this is entirely meant in fun. I was thinking today about the word nurse and how it has both verb and noun variations. To be a nurse or to nurse (as in someone back to health) So, my question was - which came first? Is this your standard hen and egg question or is there really an answer? Just curious. (also bored and work and trying to pass time.)

:chuckle

[SmilingBluEyes]

Reading my history, I believe I understand people were "nursing" others in sickness, LONG before the word "nurse" came to mean an individual who does the nursing.