Bias
When someone favors one group of people over another.
Confirm
To show that something is definitely true, especially by getting more proof.
Contradict
To disagree with something, especially by saying that the opposite is true.
Doubtful
Not certain or is not likely to happen.
Evidence
A fact, object, or sign that makes you believe that something is true.
Factual
Something that is known to be true, based on facts.
Fantasy
An idea or belief that is not based on real facts.
Illogical
Not sensible or reasonable.
Investigate
To try to find out the truth about it, such as the details of a crime.
Objective
Based on facts rather than on personal feelings.
Observation
A spoken or written comment about something that you have noticed.
Opinion
A person's belief about something.
Persuade
To make someone decide to do something, especially by giving him or her reasons why he or she should do it.
Prove
To show that something is true, especially by providing facts and information.
Theory
An idea that is supported by evidence, but not fully proven.