Which to use
“terca” is an adjective and “tosca” is a noun - they look or sound alike but fill different roles in a sentence.
- #42,175
- “terca” frequency rank
- #32,014
- “tosca” frequency rank
- 74189
- confusion score
Side-by-Side Comparison
| Feature | terca | tosca |
|---|---|---|
| Definition | Forma del femenino singular de terco. | Caliza ligera y muy porosa. |
Where the eye mixes terca and tosca
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Why the eye confuses terca with tosca
These two trip readers on the page rather than in the ear: terca is [ˈt̪eɾka] while tosca is [ˈt̪oska]. 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 (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 74189, derived from the frequency rank of both members and their visual similarity.
terca is recorded at frequency rank #42,175, classified as anadj, pronounced [ˈt̪eɾka]. tosca is at rank #32,014, tagged as anoun, pronounced [ˈt̪oska].
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 74189, this pair ranks #21,796 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.
Orthographic DNA of terca vs tosca
Shared letters: act. Private to "terca": er. Private to "tosca": os.
"terca" · 5 letters · shape CVCCV · "tosca" · 5 letters · shape CVCCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "terca" for "tosca" ever safe?
Which is more common, "terca" or "tosca"?
What to do next
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "terca" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "tosca" - compare definitions side by side with the headword page. Word entry
- This pair ranks #21,796 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "terca" and "tosca" also get mixed up with nearby pairs, the highest-scored neighbour is "terca vs tercos". 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 #21,796 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.