Bias vs Prejudice

When to use each in English, with meaning, register, and examples.

Bias

Top 2,000 (common)B2noun

Prejudice

FormalTop 5,000 (fairly common)C1noun
Most formal: PrejudiceMost common: Bias
 BiasPrejudice
Pronunciation🇬🇧 /["/ˈbaɪəs/"]/🇺🇸 /["/ˈbaɪəs/"]/🇬🇧 //ˈprɛdʒ.ʊ.dɪs//🇺🇸 //ˈprɛdʒ.ə.dɪs//
MeaningAn unfair preference or dislike of something or someone.An unfair opinion about someone based on their group.
ExampleThe study was criticized for its bias in selecting participants.His prejudice against certain ethnic groups was evident in his statements.
RegisterNeutralFormal
How commonTop 2,000 (common)Top 5,000 (fairly common)
CEFR levelB2C1
Part of speechnounnoun
Collocationsclear, definite, marked, have, demonstrate, display, creep in, exist, occur, with bias, without bias, with a biasracial prejudice, social prejudice, sexist prejudice, overcome prejudice, express prejudice
Antonymsobjectivity, fairness, neutralityacceptance, tolerance, open-mindedness
Common mistakesConfusing 'bias' with 'prejudice' - bias is more about preference., Using 'bias' without an object; it usually requires something to be biased against., Mispronouncing 'bias' as 'bee-iss' instead of 'bye-iss'.Confused with 'prejudice' as a verb (e.g., using it as an action)., Omitting the article ('a' or 'the') before 'prejudice'., Mixing up 'prejudice' with 'prejudiced' (the adjective form).
Usage notesUse 'bias' when discussing unfair treatment or preferences, often in contexts like media, research, or personal opinions. Avoid using 'bias' in casual conversations without context as it may sound overly formal.Used in discussions about discrimination and social justice. Avoid using casually or in non-serious contexts.

Frequently asked questions: Bias vs Prejudice

What's the difference between Bias and Prejudice?

Bias: An unfair preference or dislike of something or someone. Prejudice: An unfair opinion about someone based on their group.

Which is more formal: Bias and Prejudice?

Prejudice is the most formal of these.

Which is more common: Bias and Prejudice?

Bias is the most common in everyday English.

Which is more advanced: Bias and Prejudice?

Prejudice is the highest level, at C1, on the CEFR scale.

Are Bias and Prejudice the same CEFR level?

Bias: B2, Prejudice: C1 on the CEFR scale.

What part of speech are Bias and Prejudice?

Bias: noun, Prejudice: noun.

Can you show an example of each?

Bias: The study was criticized for its bias in selecting participants. Prejudice: His prejudice against certain ethnic groups was evident in his statements.

Can I use Bias and Prejudice interchangeably?

Not always. Bias and Prejudice are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.