Factory vs Mill

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

Factory

Top 1,000 (very common) A2 noun

Mill

Top 1,000 (very common) C1 noun

	Factory	Mill
Pronunciation	🇬🇧 /["/ˈfæktri//ˈfæktəri/"]/ 🇺🇸 /["/ˈfæktri//ˈfæktəri/"]/	🇬🇧 /["/mɪl/"]/ 🇺🇸 /["/mɪl/"]/
Meaning	A place where things are made.	A machine that grinds grain into flour or a place where this happens.
Example	a car factory	The old mill has been converted into apartments.
Register	Neutral	Neutral
How common	Top 1,000 (very common)	Top 1,000 (very common)
CEFR level	A2	C1
Part of speech	noun	noun
Collocations	large, small, modern, build, open, set up, make something, produce something, open, manager, owner, worker, at factory, in factory	corn, flour, grain, operate, convert, restore, grind something, stone, wheel, cotton, feed, jute, operate, own, run, produce something, town, buildings, hand
Antonyms	home, field, office	stop, halt
Common mistakes	Confuse with 'factory' vs 'manufacture' - factory is a place, manufacture is a process., Use 'factories' incorrectly in singular contexts., Mix up 'factory' with 'workshop', which usually refers to smaller, less industrial places.	Confused with 'mole' when referring to animal or place., Using 'mill' when referring to a process instead of the place., Mispronouncing it as 'meal'.
Usage notes	Use this word in a neutral or business context. Avoid using it in casual conversations or informal settings that don't relate to work or manufacturing.	Use 'mill' when referring to a place where grain is processed. It can also refer to machinery. Avoid using it in very formal contexts.

See it in real clips

Peaky Blinders › S1 E1

Works in the telegraph office at the BSA factory.

Breaking Bad › S1 E3

Smells like a Drakkar Noir factory in here.

Agents of S.H.I.E.L.D. › S1 E1

[Coulson] Michael Peterson. Factory worker, married, one kid.

Peaky Blinders › S1 E1

Works in the telegraph office at the BSA factory.

Breaking Bad › S1 E3

Smells like a Drakkar Noir factory in here.

Factory

Here's Gargantua. Here's Miller's planet.

Mill

Frequently asked questions: Factory vs Mill

What's the difference between Factory and Mill?

Factory: A place where things are made. Mill: A machine that grinds grain into flour or a place where this happens.

Which is more advanced: Factory and Mill?

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

Are Factory and Mill the same CEFR level?

Factory: A2, Mill: C1 on the CEFR scale.

What part of speech are Factory and Mill?

Factory: noun, Mill: noun.

Can you show an example of each?

Factory: a car factory Mill: The old mill has been converted into apartments.

Can I use Factory and Mill interchangeably?

Not always. Factory and Mill 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.