Did you describe tasks in terms of User Story or Use Case?

Yes, I described tasks both in terms of User Story and Use Case.

User Story is a short description of functionality from the user's perspective, usually in the format:

As [role], I want [goal], so that [benefit].

User Story helps focus on the value for the user and serves as a basis for discussion and planning.

Use Case is a more detailed description of user interaction scenarios with the system, including steps, alternative paths, and conditions. Use Case helps understand the logic of operation and system requirements.

For example, a User Story:

As a registered user, I want to reset my password to regain access to my account.

A Use Case for this story might describe steps:

• The user clicks "Forgot password?"
• The system requests email
• The user enters email
• The system sends a reset link
• The user follows the link and enters a new password

Using both approaches helps better understand and structure requirements.