| Term | Meaning |
|---|---|
| authentication | Verifying WHO you are (login) |
| authorization | Verifying WHAT you can do (permissions) |
| JWT | JSON Web Token — stateless auth token |
| OAuth 2.0 | Protocol for delegated authorization (Login with Google) |
| session | Server-side state tracking for a logged-in user |
| hashing | One-way transformation of passwords (bcrypt, argon2) |