Half vs Segment

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

Half

Top 1,000 (very common)A1noun

Segment

Top 3,000 (common)C1noun
Most common: Half
 HalfSegment
Pronunciation🇬🇧 /["/hɑːf/","/hɑːvz/"]/🇺🇸 /["/hæf/","/hævz/"]/🇬🇧 /["/ˈseɡmənt/"]/🇺🇸 /["/ˈseɡmənt/"]/
MeaningOne of two equal parts of something.A part or section of something.
ExampleI only finished half of my homework.She cleaned a small segment of the painting.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 3,000 (common)
CEFR levelA1C1
Part of speechnounnoun
Collocationsfirst, 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 halfsegment a market, segment the population, audio segment, segment analysis, visual segment
Antonymswhole, fullwhole, entirety
Common mistakesConfused with 'whole' when describing completeness., Using 'halfs' as the plural (correct is 'halves').Confused with 'segment' vs 'segregate', Omitting the object when using 'segment' as a verb, Using 'segment' in incorrect contexts, such as emotional feelings
Usage notesUsed 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.Use 'segment' in contexts involving division or parts of a whole, such as in science or marketing. Avoid using it in very casual conversations.

See it in real clips

Half

Frequently asked questions: Half vs Segment

What's the difference between Half and Segment?

Half: One of two equal parts of something. Segment: A part or section of something.

Which is more common: Half and Segment?

Half is the most common in everyday English.

Which is more advanced: Half and Segment?

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

Are Half and Segment the same CEFR level?

Half: A1, Segment: C1 on the CEFR scale.

What part of speech are Half and Segment?

Half: noun, Segment: noun.

Can you show an example of each?

Half: I only finished half of my homework. Segment: She cleaned a small segment of the painting.

Can I use Half and Segment interchangeably?

Not always. Half and Segment 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.

Related comparisons