factorvsfactoryTell them apart

Which to use

“factor” and “factory” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#2,154
“factor” frequency rank
#2,735
“factory” frequency rank
4889
confusion score

Side-by-Side Comparison

Feature factor factory
Definition A doer, maker; a person who does things for another person or organization. A building or other place where manufacturing takes place.

Where the eye mixes factor and factory

Muted = shared; highlighted = the visual trap. They share 6 letters in sequence.

6 ch
factor
7 ch
factory

Look-alike desk: factor vs factory

A purely visual mix-up. factor (/ˈfæk.tə/) and factory (/ˈfæk.tə.ɹi/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 extra letter(s) - “factor” sits inside “factory”. Our composite confusion score for this pair is 4889, derived from the frequency rank of both members and their visual similarity.

factor is recorded at frequency rank #2,154, classified as anoun, pronounced /ˈfæk.tə/. factory is at rank #2,735, tagged as anoun, pronounced /ˈfæk.tə.ɹi/.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 4889, this pair ranks #517,320 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of factor vs factory

Shared letters: acfort. Private to "factor": -. Private to "factory": y.

"factor" · 6 letters · shape CVCCVC  ·  "factory" · 7 letters · shape CVCCVCV

Known mistypes of this pair

  • factorafctor · facctor · facotr · factorr · factro · facttor · fatcor · fcator
  • factoryafctory · facctory · facotry · factorry · factoryy · factoyr · factroy · facttory

Frequently Asked Questions

Is swapping "factor" for "factory" ever safe?
No. They are said differently (/ˈfæk.tə/ versus /ˈfæk.tə.ɹi/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "factor" vs "factory" - which ranks higher?
"factor" is the more common of the two: it sits at frequency rank #2,154 in our English list, against #2,735 for "factory". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Eye-level mix-up between "factor" and "factory" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "factor" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "factory" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #517,320 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "factor" and "factory" also get mixed up with nearby pairs, the highest-scored neighbour is "factor vs falter". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #517,320 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list