Which to use
“cobalt” and “cobble” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #17,796
- “cobalt” frequency rank
- #40,620
- “cobble” frequency rank
- 58416
- confusion score
Side-by-Side Comparison
| Feature | cobalt | cobble |
|---|---|---|
| Definition | A chemical element (symbol Co) with an atomic number of 27: a hard, lustrous, silver-gray metal. | A cobblestone. |
Where the eye mixes cobalt and cobble
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. cobalt (CVCVCC) and cobble (CVCCCV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Visual trap between cobalt and cobble
A purely visual mix-up. cobalt (/ˈkəʊ.bɒlt/) and cobble (/ˈkɒb.əl/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 58416, derived from the frequency rank of both members and their visual similarity.
cobalt is recorded at frequency rank #17,796, classified as anoun, pronounced /ˈkəʊ.bɒlt/. cobble is at rank #40,620, tagged as anoun, pronounced /ˈkɒb.əl/.
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 58416, this pair ranks #112,733 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of cobalt vs cobble
Shared letters: bclo. Private to "cobalt": at. Private to "cobble": e.
"cobalt" · 6 letters · shape CVCVCC · "cobble" · 6 letters · shape CVCCCV
Known mistypes of this pair
Frequently Asked Questions
Can "cobalt" and "cobble" be used interchangeably?
Frequency check: "cobalt" vs "cobble" - which ranks higher?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "cobalt" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "cobble" - compare definitions side by side with the headword page. Word entry
- This pair ranks #112,733 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "cobalt" and "cobble" also get mixed up with nearby pairs, the highest-scored neighbour is "cabbie vs cobble". 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 #112,733 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.