blacksvsblocksWhich spelling fits?

Which to use

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

#5,577
“blacks” frequency rank
#3,410
“blocks” frequency rank
8987
confusion score

Side-by-Side Comparison

Feature blacks blocks
Definition plural of black plural of block

Where the eye mixes blacks and blocks

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

6 ch
blacks
6 ch
blocks

Why the eye confuses blacks with blocks

A purely visual mix-up. blacks (/blæks/) and blocks (/blɑks/) 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 a single letter - a in “blacks” becomes o in “blocks”. Our composite confusion score for this pair is 8987, derived from the frequency rank of both members and their visual similarity.

blacks is recorded at frequency rank #5,577, classified as anoun, pronounced /blæks/. blocks is at rank #3,410, tagged as anoun, pronounced /blɑks/.

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 8987, this pair ranks #499,658 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of blacks vs blocks

Shared letters: bckls. Private to "blacks": a. Private to "blocks": o.

"blacks" · 6 letters · shape CCVCCC  ·  "blocks" · 6 letters · shape CCVCCC

Known mistypes of this pair

  • blacksbalcks · bblacks · blaccks · blackks · blackss · blacsk · blakcs · blcaks
  • blocksbblocks · blcoks · bllocks · bloccks · blockks · blockss · blocsk · blokcs

Frequently Asked Questions

Is swapping "blacks" for "blocks" ever safe?
No. They are said differently (/blæks/ versus /blɑks/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary English text, does "blacks" or "blocks" show up more?
"blocks" is the more common of the two: it sits at frequency rank #3,410 in our English list, against #5,577 for "blacks". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

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

  • Full dictionary entry for "blacks" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "blocks" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #499,658 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "blacks" and "blocks" also get mixed up with nearby pairs, the highest-scored neighbour is "blacker vs blacks". 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 #499,658 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