Which to use
“física” is a noun and “físicas” is an adjective - they look or sound alike but fill different roles in a sentence.
- #1,678
- “física” frequency rank
- #5,208
- “físicas” frequency rank
- 6886
- confusion score
Side-by-Side Comparison
| Feature | física | físicas |
|---|---|---|
| Definition | Ciencia que estudia las propiedades e interacciones del espacio, el tiempo, la materia y la energía. Algunas ramas de la física son: acústica, astronomía, biofísica, termodinámica, física de altas energías, física del estado sólido, físicoquímica, electromagnetismo, mecánica clásica, mecánica cuántica, mecánica estadística, óptica, termodinámica, relatividad. | Forma del femenino plural de físico. |
Where the eye mixes física and físicas
Muted = shared; highlighted = the visual trap. They share 6 letters in sequence. física runs 6 letters (CVCVCV) against físicas's 7 (CVCVCVC) - the length gap alone is often enough to separate them once you know to check it.
Visual trap between física and físicas
These two trip readers on the page rather than in the ear: física is [ˈfisika] while físicas is [ˈfisikas]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 extra letter(s) - “física” sits inside “físicas”, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 6886, derived from the frequency rank of both members and their visual similarity.
física is recorded at frequency rank #1,678, classified as anoun, pronounced [ˈfisika]. físicas is at rank #5,208, tagged as anadj, pronounced [ˈfisikas].
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 6886, this pair ranks #309,548 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of física vs físicas
Shared letters: acfisí. Private to "física": -. Private to "físicas": -.
"física" · 6 letters · shape CVCVCV · "físicas" · 7 letters · shape CVCVCVC
Frequently Asked Questions
Can "física" and "físicas" be used interchangeably?
In ordinary Spanish text, does "física" or "físicas" show up more?
After this comparison
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "física" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "físicas" - compare definitions side by side with the headword page. Word entry
- This pair ranks #309,548 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "física" and "físicas" also get mixed up with nearby pairs, the highest-scored neighbour is "fiaca vs física". Nearby pair
Confusion rank #309,548 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.