Clone
In plain terms
Creating a local copy of a remote repository.
Going deeper
Cloning downloads a full copy of a repository, including its history, to your machine so you can work locally. You get the entire project and its past.
Under the hood
Every clone is a complete repository (distributed VCS); connects to the remote as 'origin'.
Examples
git clone, starting work, downloading repos, local development.
Think of it like...
Like downloading a complete copy of a shared library to your own desk.