Someone who has earned their PhD.
Usually someone wanting to be a university professor has earned their PhD or MFA. If you are working your way toward a Phd you may be a teaching assistant in the meantime.
'grats!
Yes
The verb of congratulations is congratulate. As in "to congratulate someone for something".
"Congratulate" is a verb. It is used to express warm approval or admiration for someone's achievements or good fortune.
education
Howrse has a page for people's birthdays. Click on one of them and then you click congratulate.
No, you say Happy Birthday to someone to congratulate them on their birthday. You say Happy Anniversary to a couple who are celebrating their anniversary together.
no one
i congratulate you
you have to congratulate someone on there birthday :)