jackvsjawTell them apart

Which to use

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

#1,604
“jack” frequency rank
#7,354
“jaw” frequency rank
8958
confusion score

Side-by-Side Comparison

Feature jack jaw
Definition A coarse medieval coat of defence, especially one made of leather. One of the bones, usually bearing teeth, which form the framework of the mouth.

Where the eye mixes jack and jaw

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

4 ch
jack
3 ch
jaw

Look-alike desk: jack vs jaw

A purely visual mix-up. jack (/d͡ʒæk/) and jaw (/d͡ʒɔː/) 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 8958, derived from the frequency rank of both members and their visual similarity.

jack is recorded at frequency rank #1,604, classified as anoun, pronounced /d͡ʒæk/. jaw is at rank #7,354, tagged as anoun, pronounced /d͡ʒɔː/.

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 8958, this pair ranks #499,814 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of jack vs jaw

Shared letters: aj. Private to "jack": ck. Private to "jaw": w.

"jack" · 4 letters · shape CVCC  ·  "jaw" · 3 letters · shape CVC

Known mistypes of this pair

  • jackajck · jacck · jackk · jakc · jcak · jjack

Frequently Asked Questions

Is swapping "jack" for "jaw" ever safe?
No. They are said differently (/d͡ʒæk/ versus /d͡ʒɔː/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "jack" vs "jaw" - which ranks higher?
"jack" is the more common of the two: it sits at frequency rank #1,604 in our English list, against #7,354 for "jaw". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

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

  • Full dictionary entry for "jack" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "jaw" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #499,814 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "jack" and "jaw" also get mixed up with nearby pairs, the highest-scored neighbour is "jaw vs JIT". 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 #499,814 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