look up any word, like half chub:
 
1.
Roll-neutral term for caretaker and caregiver.

The verb suffixes of those imply one is rewarding or denying the other,

from'tend', meaning to act as an attendant + -er to make it the same verb noun
"Did you hear about what great work the new caretender at … … has done for the transfolk recovering there?"
by Kozmo the WordWíld December 18, 2013