Sector vs Segment

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

Sector

Top 2,000 (common)B2noun

Segment

Top 3,000 (common)C1noun
Most common: Sector
 SectorSegment
Pronunciation🇬🇧 /["/ˈsektə(r)/"]/🇺🇸 /["/ˈsektər/"]/🇬🇧 /["/ˈseɡmənt/"]/🇺🇸 /["/ˈseɡmənt/"]/
MeaningA part or area of something, often used in business or economy.A part or section of something.
ExampleThe economic sector has shown significant growth this year.She cleaned a small segment of the painting.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 3,000 (common)
CEFR levelB2C1
Part of speechnounnoun
Collocationsimportant, key, growing, in a/​the sector, a sector of the economy, a sector of the industry, a sector of the market, rural, urban, northern, divide something into, a sector of the city, a sector of society, a sector of the populationsegment a market, segment the population, audio segment, segment analysis, visual segment
Antonymswhole, entirety, totalitywhole, entirety
Common mistakesConfused with 'section' - 'sector' refers to parts of industries., Using 'sector' in informal contexts where simpler words like 'part' would fit better., Mixing up sectors, such as 'public sector' and 'private sector' without understanding their meanings.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 discussions about economy, industry, or specific areas of expertise. Avoid using in very casual conversation.Use 'segment' in contexts involving division or parts of a whole, such as in science or marketing. Avoid using it in very casual conversations.

Frequently asked questions: Sector vs Segment

What's the difference between Sector and Segment?

Sector: A part or area of something, often used in business or economy. Segment: A part or section of something.

Which is more common: Sector and Segment?

Sector is the most common in everyday English.

Which is more advanced: Sector and Segment?

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

Are Sector and Segment the same CEFR level?

Sector: B2, Segment: C1 on the CEFR scale.

What part of speech are Sector and Segment?

Sector: noun, Segment: noun.

Can you show an example of each?

Sector: The economic sector has shown significant growth this year. Segment: She cleaned a small segment of the painting.

Can I use Sector and Segment interchangeably?

Not always. Sector 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.

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