1. usability evaluation, 2. usability test

goal

Explanation
Human-centred design is an approach to design that aims to make interactive systems more usable by focusing on the use of the interactive system and applying usability knowledge and methods. Human-centred design is based upon an explicit understanding of users, goals, tasks, resources and environments. Users are involved throughout the design. The design is driven and refined by usability evaluation. The process is iterative - that is, it continues until the user requirements are met. The design addresses the whole user experience (UX).
Human-centred design means planning for iterations, getting user feedback as early and as often as possible. It is perfectly acceptable to run through the iterations often with lightweight UX deliverables, for example in agile development.
An approach to design that aims to make interactive systems more usable by focusing on the use of the interactive system and applying human factors, ergonomics and usability knowledge and methods. Notes: 1.
The concept "human-centred design" is used instead of "user-centred design" to emphasise the need to consider additional stakeholders who may not be users. 2. Feedback from users through usability evaluation is a critical source of information in human-centred design.

Explanation
Stakeholders may or may not be users. Stakeholders are not considered to be users if they are affected by an interactive system but don't interact with it or use its output.
Examples of stakeholders who are not users:
1. The non-technical managers of a team of technical users.
2. People affected by the noise produced by an interactive system.
3. Marketers affected by the impact of the use of the interactive system on the brand.
Examples:
1. A customer (user) uses a car reservation website to make a reservation - The customer is a primary user of the system.
2. A customer (user) calls the reservation centre where a customer service representative uses the same system to make the reservation for them -The customer is an indirect user of the system.