closervsclusterWhich spelling fits?

Quick tell: closer is a adjective, cluster is a noun, so they fill different roles in a sentence.

Which to use

“closer” is an adjective and “cluster” is a noun - they look or sound alike but fill different roles in a sentence.

#1,891
“closer” frequency rank
#7,206
“cluster” frequency rank
9097
confusion score

Side-by-Side Comparison

Feature closer cluster
Definition comparative form of close: more close A bunch or group of several discrete items that are close to each other.

Where the eye mixes closer and cluster

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.

6 ch
closer
7 ch
cluster

Look-alike desk: closer vs cluster

These two trip readers on the page rather than in the ear: closer is /ˈkləʊ.sə/ while cluster is /ˈklʌstə/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 9097, derived from the frequency rank of both members and their visual similarity.

closer is recorded at frequency rank #1,891, classified as anadj, pronounced /ˈkləʊ.sə/. cluster is at rank #7,206, tagged as anoun, pronounced /ˈklʌstə/.

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 9097, this pair ranks #499,108 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of closer vs cluster

Shared letters: celrs. Private to "closer": o. Private to "cluster": tu.

"closer" · 6 letters · shape CCVCVC  ·  "cluster" · 7 letters · shape CCVCCVC

Known mistypes of this pair

  • closerccloser · clloser · cloesr · closerr · closre · closser · clsoer · colser
  • clusterccluster · clluster · clsuter · clusetr · clusster · clusterr · clustre · clustter

Frequently Asked Questions

Can "closer" and "cluster" be used interchangeably?
No - they are not even the same part of speech. "closer" is an adjective and "cluster" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "closer" or "cluster" show up more?
"closer" is the more common of the two: it sits at frequency rank #1,891 in our English list, against #7,206 for "cluster". 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 "closer" and "cluster" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "closer" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "cluster" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #499,108 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "closer" and "cluster" also get mixed up with nearby pairs, the highest-scored neighbour is "cluster vs crusted". 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 #499,108 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