Fraction vs Half

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

Fraction

Top 2,000 (common)B2noun

Half

Top 1,000 (very common)A1noun
Most common: Half
 FractionHalf
Pronunciation🇬🇧 /["/ˈfrækʃn/"]/🇺🇸 /["/ˈfrækʃn/"]/🇬🇧 /["/hɑːf/","/hɑːvz/"]/🇺🇸 /["/hæf/","/hævz/"]/
MeaningA part of a whole, often shown as a number with a top and a bottom.One of two equal parts of something.
ExampleOnly a small fraction of a bank's total deposits will be withdrawn at any one time.I only finished half of my homework.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 1,000 (very common)
CEFR levelB2A1
Part of speechnounnoun
Collocationslarge, significant, sizeable, fraction of, just a fraction, only a fraction, vulgar, decimal, improper, express something asfirst, second, last, by half, in half, in the… half, about half, almost half, around half, first, second, last, by half, in half, in the… half, about half, almost half, around half
Antonymswhole, entiretywhole, full
Common mistakesConfused with 'fractional' which means something that is in part., Omitting the word 'of' when describing parts, e.g., saying '1/2 cake' instead of '1/2 of a cake'., Using it incorrectly with non-numerical contexts.Confused with 'whole' when describing completeness., Using 'halfs' as the plural (correct is 'halves').
Usage notesUsed in math and everyday situations to describe dividing things. It may not be used in casual conversations unless discussing specific math topics.Used in everyday conversation as well as in written contexts. It's appropriate for both formal and informal situations, like asking for half a pizza or describing a study that used half the participants.

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Half

Frequently asked questions: Fraction vs Half

What's the difference between Fraction and Half?

Fraction: A part of a whole, often shown as a number with a top and a bottom. Half: One of two equal parts of something.

Which is more common: Fraction and Half?

Half is the most common in everyday English.

Which is more advanced: Fraction and Half?

Fraction is the highest level, at B2, on the CEFR scale.

Are Fraction and Half the same CEFR level?

Fraction: B2, Half: A1 on the CEFR scale.

What part of speech are Fraction and Half?

Fraction: noun, Half: noun.

Can you show an example of each?

Fraction: Only a small fraction of a bank's total deposits will be withdrawn at any one time. Half: I only finished half of my homework.

Can I use Fraction and Half interchangeably?

Not always. Fraction and Half 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.