Which to use
“alga” is a noun and “apaga” is a verb - they look or sound alike but fill different roles in a sentence.
- #34,872
- “alga” frequency rank
- #10,448
- “apaga” frequency rank
- 45320
- confusion score
Side-by-Side Comparison
| Feature | alga | apaga |
|---|---|---|
| Definition | Organismo acuático autótrofo —es decir, capaz de fotosíntesis—, sea procarionte o eucarionte. No forman un grupo taxonómico homogéneo, comprendiendo desde organismos unicelulares muy sencillos hasta enormes colonias de decenas de metros de longitud. Se clasifican en al menos nueve filos, de uno de los cuales proceden evolutivamente las plantas propiamente dichas. | Tercera persona del singular (él, ella, ello; usted, 2.ª persona) del presente de indicativo de apagar. |
Where the eye mixes alga and apaga
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. alga runs 4 letters (VCCV) against apaga's 5 (VCVCV) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses alga with apaga
These two trip readers on the page rather than in the ear: alga is [ˈalɣ̞a] while apaga is [aˈpaɣ̞a]. 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 (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 45320, derived from the frequency rank of both members and their visual similarity.
alga is recorded at frequency rank #34,872, classified as anoun, pronounced [ˈalɣ̞a]. apaga is at rank #10,448, tagged as averb, pronounced [aˈpaɣ̞a].
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 45320, this pair ranks #132,088 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of alga vs apaga
Shared letters: ag. Private to "alga": l. Private to "apaga": p.
"alga" · 4 letters · shape VCCV · "apaga" · 5 letters · shape VCVCV
Known mistypes of this pair
Frequently Asked Questions
Can "alga" and "apaga" be used interchangeably?
Frequency check: "alga" vs "apaga" - which ranks higher?
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 "alga" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "apaga" - compare definitions side by side with the headword page. Word entry
- This pair ranks #132,088 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "alga" and "apaga" also get mixed up with nearby pairs, the highest-scored neighbour is "alga vs anta". 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 #132,088 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.