These are some new words we have learnt in English.

Agenda list of items or a given perspective.

Authority someone who is an authority on something
Knows a lot about it.

Bias someone who favours one person or thing unfairly.

Credible is someone or something is credible you can believe it.

Manipulate to influence or control people or events.

Perspective a particular way of looking at something.

Reliable a person or thing that can be trusted to do what  you want.

Source the person place or thing that something comes from.