secavssedWhich spelling fits?

Quick tell: seca is a adjective, sed is a noun, so they fill different roles in a sentence.

Which to use

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

#5,432
“seca” frequency rank
#5,559
“sed” frequency rank
10991
confusion score

Side-by-Side Comparison

Feature seca sed
Definition Forma del femenino singular de seco. Sensación fisiológica de sequedad en la garganta o boca que conlleva la necesidad de ingerir líquidos. Se dispara por la disminución del volumen de líquido en el cuerpo o una elevada concentración de osmolitos como la sal.

Where the eye mixes seca and sed

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

4 ch
seca
3 ch
sed

Why the eye confuses seca with sed

These two trip readers on the page rather than in the ear: seca is [ˈseka] while sed is [ˈseð̞]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 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 10991, derived from the frequency rank of both members and their visual similarity.

seca is recorded at frequency rank #5,432, classified as anadj, pronounced [ˈseka]. sed is at rank #5,559, tagged as anoun, pronounced [ˈseð̞].

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 10991, this pair ranks #296,647 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of seca vs sed

Shared letters: es. Private to "seca": ac. Private to "sed": d.

"seca" · 4 letters · shape CVCV  ·  "sed" · 3 letters · shape CVC

Known mistypes of this pair

  • secaceca · esca · scea · seac · secca · sseca

Frequently Asked Questions

Do "seca" and "sed" mean the same thing in a sentence?
No - they are not even the same part of speech. "seca" is an adjective and "sed" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "seca" vs "sed" - which ranks higher?
"seca" is the more common of the two: it sits at frequency rank #5,432 in our Spanish list, against #5,559 for "sed". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Eye-level mix-up between "seca" and "sed" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "seca" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "sed" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #296,647 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "seca" and "sed" also get mixed up with nearby pairs, the highest-scored neighbour is "sed vs stem". 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 #296,647 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