terminal
Typing the exact same long command dozens of times a day gets old fast, so developers invented a shortcut for shortcuts.
An alias lets you assign a short, custom abbreviation to a longer command, so instead of typing out a lengthy command dozens of times a day, you can define something brief that expands to it automatically. Aliases are typically saved in a shell configuration file, like .zshrc or .bashrc, so they persist every time you open a new terminal session rather than needing to be redefined each time.
'nickname' and 'shortcut' are simply generic English words describing the general idea, but neither is the actual technical term used for this specific terminal feature.
A developer's shell configuration file tends to accumulate personal aliases over years of use, effectively becoming a running record of their muscle memory and the exact commands they type most often.
terminal
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