Here are some possible spellings and their meanings:
* Nana: This is a common spelling for a grandmother, particularly in some regions of the US and UK.
* Nanna: This is another common spelling for a grandmother, often used in Australia and New Zealand.
* Nan: This is a shortened version of "Nana" or "Nanna" and is also used as a term of endearment for a grandmother.
* Nene: This is a less common spelling, but is still used in some families.
* Nonna: This is the Italian word for grandmother.
* Yaya: This is a common term for grandmother in some Arabic-speaking countries.
Ultimately, the correct spelling depends on the individual's preference and the specific family tradition.