Either man or woman could take the vow.
They were to keep and separate themselves from wine and strong drink.
They could not drink vinegar of wine or even eat moist grapes, or raisons.
No razor came upon their heads until the days were fulfilled, which could have been for a limited period of time, not necessarily a whole a lifetime.
All the days that he or she is separated unto the LORD, they shall not be near or touch any dead bodies.
Jesus was a Nazarene, not a Nazarite.