Add an [alias](https://help.obsidian.md/Linking+notes+and+files/Aliases) to a note to reference a file using multiple names. For example, the note [[independent and identically distributed]] can be aliased as "iid" so that when you type the internal link `[[iid]]` it will automatically rename it with custom display text as `[[independent and identically distributed|iid]]`.
I use aliases for
- the plural of a singular word
- commonly used acronyms
Keep in mind that Obsidian will not retroactively update links that reference an alias. If you have a link to an alias in an existing note, adding the alias to another existing note will not fix that link.