Nanak can be spelled in multiple different ways, each with their own meanings, which is why I want to include it in my MoC for [[Gurbani concepts, metaphors, and grammar]].
I learned about these different spellings from [[Satpal Singh]]'s JapJi Sahib Katha podcast. Another great resource: this [video](https://www.youtube.com/watch?v=7GutrkUOG7s).
ਨਾਨਕੁ = Referring to Guru Nanak Dev Jee in the subjective case, the one doing the action or the actual person
ਨਾਨਕਿ = When Guru Nanak Dev Jee is the one receiving or experiencing an action
This is very similar to [[Tusi vs Tuhanu vs Tenu]].