Which to use
“tosca” is a noun and “toser” is a verb - they look or sound alike but fill different roles in a sentence.
- #32,014
- “tosca” frequency rank
- #38,995
- “toser” frequency rank
- 71009
- confusion score
Side-by-Side Comparison
| Feature | tosca | toser |
|---|---|---|
| Definition | Caliza ligera y muy porosa. | Respirar de forma violenta y producir mediante ello la liberación del aire o de otra sustancia de los pulmones. |
Where the eye mixes tosca and toser
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. tosca (CVCCV) and toser (CVCVC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Visual trap between tosca and toser
These two trip readers on the page rather than in the ear: tosca is [ˈt̪oska] while toser is [t̪oˈseɾ]. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 71009, derived from the frequency rank of both members and their visual similarity.
tosca is recorded at frequency rank #32,014, classified as anoun, pronounced [ˈt̪oska]. toser is at rank #38,995, tagged as averb, pronounced [t̪oˈseɾ].
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 71009, this pair ranks #28,434 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.
Orthographic DNA of tosca vs toser
Shared letters: ost. Private to "tosca": ac. Private to "toser": er.
"tosca" · 5 letters · shape CVCCV · "toser" · 5 letters · shape CVCVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "tosca" for "toser" ever safe?
Frequency check: "tosca" vs "toser" - which ranks higher?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "tosca" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "toser" - compare definitions side by side with the headword page. Word entry
- This pair ranks #28,434 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "tosca" and "toser" also get mixed up with nearby pairs, the highest-scored neighbour is "tone vs toser". 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 #28,434 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.