YES!!!
Paternal/Maternal is the adjective for father/mother.
Aunt is the sibling of your father or mother.
If the generations are removed by one, to your grandparants.
Then The aunt becomes as sister to your grandparents, ' Paterna;/Matermal GREAT Aunt.
Similarly for Uncle. (The corresponding make relative.
Yes, you can call your father's sister your paternal aunt, but few would bother with that distinction. Most would simply call her your aunt.
Your father's sister is your, paternal aunt,and your mother's sister is your, maternal aunt.Father's sister is your aunt.
Aunt
Your father's sister is your, paternal aunt,and your mother's sister is your, maternal aunt.Father's sister is your aunt.
gomo
You don't call your brother's sister your aunt. Your brother's sister is your sister, or you. Your aunt is the sister of your mother or father.
'Aunt' More informally, she may be called 'Aunty ****'
aunt
aunt
Your mother's sister is your aunt.
Your father's sister is your aunt. Her son is your first cousin. Her grandson is your first cousin, once removed.
Your mother's sister's aunt is also your mother's aunt. So she would be your great aunt.
You would call your mother's sister an aunt.