falso vs fas, What's the Difference?

Which to use

“falso” is an adjective and “fas” is a noun - they look or sound alike but fill different roles in a sentence.

#2,776
“falso” frequency rank: #27,227
“fas” frequency rank: 30003
confusion score

Side-by-Side Comparison

Feature	falso	fas
Definition	Que simula, imita o parece ser real, sin serlo.	Cara, faz, haz, jeta, rostro.

Where the spellings diverge

Shared letters are muted; the letters that actually set falso and fas apart are highlighted. They share 3 letters in sequence, which is exactly why the eye skips the difference.

5 ch

falso

3 ch

fas

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: falso is [ˈfalso] while fas is /ˈfasː/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 30003, derived from the frequency rank of both members and their visual similarity.

falso is recorded at frequency rank #2,776, classified as anadj, pronounced [ˈfalso]. fas is at rank #27,227, tagged as anoun, pronounced /ˈfasː/.

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 30003, this pair ranks #214,152 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of falso vs fas

Shared letters: afs. Private to "falso": lo. Private to "fas": -.

"falso" · 5 letters · shape CVCCV · "fas" · 3 letters · shape CVC

Known mistypes of this pair

falso ← aflso · fallso · falos · falsso · faslo · ffalso · flaso

Frequency comparison

falso#2,776

fas#27,227

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "falso" and "fas" be used interchangeably?

No - they are not even the same part of speech. "falso" is an adjective and "fas" a noun, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "falso" or "fas"?

"falso" is the more common of the two: it sits at frequency rank #2,776 in our Spanish list, against #27,227 for "fas". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering falso vs fas

The fastest way to pick the right one every time.

Check the role first: if you need an adjective, it's “falso”; for a noun, it's “fas”.
See each word in full, definition, IPA, etymology and its other confusables. Full “falso” entry
Browse more pairs most likely to be confused. Most confusable