Father's grandma is traditionally referred to as "great-grandma," denoting a level on top of the conventional "grandma." Other synonyms for father's grandma include "great-grandmother," "great-granny," or "great-nana." While these terms may sound interchangeable, the particular word used depends on regional and cultural nuances. "Nanny," "nana," and "grammy" are common affectionate nicknames for grandmothers, while "great-grammy" or "gigi" are associated with great-grandmothers. In some regions, "granny-great" or "great-granny-great" is used for further generations. Similar to a grandmother, a great-grandmother has a significant impact on her family and is cherished by many.