corevscozWhat's the difference?

Which to use

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

#1,892
“core” frequency rank
#23,792
“coz” frequency rank
25684
confusion score

Side-by-Side Comparison

Feature core coz
Definition In general usage, an essential part of a thing surrounded by other essential things. cousin (usually as a term of address)

Where the eye mixes core and coz

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
core
3 ch
coz

Look-alike desk: core vs coz

A purely visual mix-up. core (/kɔː/) and coz (/kʌz/) 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 letter(s) in length. Our composite confusion score for this pair is 25684, derived from the frequency rank of both members and their visual similarity.

core is recorded at frequency rank #1,892, classified as anoun, pronounced /kɔː/. coz is at rank #23,792, tagged as anoun, pronounced /kʌz/.

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 25684, this pair ranks #392,425 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of core vs coz

Shared letters: co. Private to "core": er. Private to "coz": z.

"core" · 4 letters · shape CVCV  ·  "coz" · 3 letters · shape CVC

Known mistypes of this pair

  • coreccore · coer · corre · croe · ocre

Frequently Asked Questions

Do "core" and "coz" mean the same thing in a sentence?
No. They are said differently (/kɔː/ versus /kʌz/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "core" or "coz"?
"core" is the more common of the two: it sits at frequency rank #1,892 in our English list, against #23,792 for "coz". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "core" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "coz" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #392,425 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "core" and "coz" also get mixed up with nearby pairs, the highest-scored neighbour is "CGT vs coz". 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 #392,425 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