fasevsfosoWhat's the difference?

Which to use

“fase” and “foso” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#2,293
“fase” frequency rank
#24,157
“foso” frequency rank
26450
confusion score

Side-by-Side Comparison

Feature fase foso
Definition Cada uno de los diversos aspectos que presenta un fenómeno natural o una cosa, doctrina, proceso, etc. Depresión de relativa profundidad practicada en una superficie.

Where the eye mixes fase and foso

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
fase
4 ch
foso

Look-alike desk: fase vs foso

A purely visual mix-up. fase ([ˈfase]) and foso ([ˈfoso]) 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 26450, derived from the frequency rank of both members and their visual similarity.

fase is recorded at frequency rank #2,293, classified as anoun, pronounced [ˈfase]. foso is at rank #24,157, tagged as anoun, pronounced [ˈfoso].

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 26450, this pair ranks #231,548 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of fase vs foso

Shared letters: fs. Private to "fase": ae. Private to "foso": o.

"fase" · 4 letters · shape CVCV  ·  "foso" · 4 letters · shape CVCV

Known mistypes of this pair

  • faseafse · faes · fasse · ffase · fsae
  • fosoffoso · foos · fosso · fsoo · ofso

Frequently Asked Questions

Can "fase" and "foso" be used interchangeably?
No. They are said differently ([ˈfase] versus [ˈfoso]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "fase" or "foso"?
"fase" is the more common of the two: it sits at frequency rank #2,293 in our Spanish list, against #24,157 for "foso". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

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

  • Full dictionary entry for "fase" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "foso" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #231,548 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "fase" and "foso" also get mixed up with nearby pairs, the highest-scored neighbour is "fora vs foso". 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 #231,548 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list