Parent (Addressing to, or talking about them to another family member) :
Maman (mom)
Papa (dad)
Parent (talking about them to someone outside of family circle)
Mère (my mother)
Père (my Father)
Great parent (both addressing to and talking about them within family circle)
Mémé (not sure there's a word in english),
pépé (same, most close would be grandma and grandpa)
Though some people prefer using "mamy" and "papy" instead, as "mémé/pépé" could be pejorative word to designate "old peoples".
Great parent (talking about them to someone outside of family circle)
Grand mère (great mother)
Grand père (Great father)
uncle : tonton (within family), or just using the word "uncle" when talking about him with someone else
aunt : tata (or aunt, for same reason as above)
I already got someone asking me why I don't use "papa" instead of "father" when talking about my father.
some people are saying "my papa", even to strangers. I find it too personal and private to use "papa" and prefer using "father".
But I never call my father "Father" when I talk to him directly, it's seen as "aristocratic" and high society, noble.
but everyone has a different approach and sensibility with that. there's no definitive French way to address your family, some people are even inventing names.
some are even calling them bad names, or insulting, calling names. I always find that really weird and being disrespectful.
things like "old one!" or worse.
