codervscoreWhich spelling fits?

Which to use

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

#42,066
“coder” frequency rank
#1,892
“core” frequency rank
43958
confusion score

Side-by-Side Comparison

Feature coder core
Definition A device that generates a code, often as a series of pulses. In general usage, an essential part of a thing surrounded by other essential things.

Letter map: coder vs core

Shared letters muted; letters that set coder and core apart highlighted. Shared run: 3.

5 ch
coder
4 ch
core

Pair insight - coder / core

coder and core are indexed as a confusable English pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 43958, derived from the frequency rank of both members and their visual similarity.

coder is recorded at frequency rank #42,066, classified as anoun. core is at rank #1,892, tagged as anoun, pronounced /kɔː/.

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 43958, this pair ranks #235,037 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of coder vs core

Shared letters: ceor. Private to "coder": d. Private to "core": -.

"coder" · 5 letters · shape CVCVC  ·  "core" · 4 letters · shape CVCV

Known mistypes of this pair

  • coderccoder · cdoer · codder · coderr · codre · coedr · ocder
  • coreccore · coer · corre · croe · ocre

Frequently Asked Questions

Do "coder" and "core" mean the same thing in a sentence?
No. They differ by 1 letter(s) in length, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.
Frequency check: "coder" vs "core" - which ranks higher?
"core" is the more common of the two: it sits at frequency rank #1,892 in our English list, against #42,066 for "coder". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

You've compared "coder" and "core". Here's where to go from here.

  • Full dictionary entry for "coder" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "core" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #235,037 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "coder" and "core" also get mixed up with nearby pairs, the highest-scored neighbour is "coder vs cower". 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 #235,037 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