An alias too is unique over all names and aliases, and therefore identifying.
The formal name consists of characters A–Z (uppercase), 0–9, " " (space), and "-" (hyphen).
There are five possible reasons to assign an alias name to a code point.
These labels may not be unique and may use irregular characters in their name.
They are used in Unicode code charts, for example U+070F SYRIAC ABBREVIATION MARK: SAM.