Grandmummy is a term of endearment for a grandmother. However, depending on where you are in the world, the term may differ. In the United States, grandmom, grandma, and granny are used interchangeably. Other countries have their terms like Grandmama in the UK and Australia, Ouma in South Africa, Nana in New Zealand, and Abuela in Spain. Other synonyms for Grandmummy or grandmother include Nonna, Lola, Gogo, Babi, Oma, Omi, Amma, and Yaya. Whatever the term, grandmothers play a special role in their grandchildren's lives and are an essential part of the family unit.