algavsallíWhat's the difference?

Quick tell: alga is a noun, allí is an adverb, so they fill different roles in a sentence.

Which to use

“alga” is a noun and “allí” is an adverb - they look or sound alike but fill different roles in a sentence.

#34,872
“alga” frequency rank
#453
“allí” frequency rank
35325
confusion score

Side-by-Side Comparison

Feature alga allí
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. Indica un lugar alejado de quienes hablan o se comunican.

Where the spellings diverge

Shared letters are muted; the letters that actually set alga and allí apart are highlighted. They share 2 letters in sequence, which is exactly why the eye skips the difference.

4 ch
alga
4 ch
allí

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: alga is [ˈalɣ̞a] while allí is [aˈʝi]. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs adverb), which is usually the fastest check. Our composite confusion score for this pair is 35325, 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]. allí is at rank #453, tagged as anadv, pronounced [aˈʝi].

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 35325, this pair ranks #186,696 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of alga vs allí

Shared letters: al. Private to "alga": g. Private to "allí": í.

"alga" · 4 letters · shape VCCV  ·  "allí" · 4 letters · shape VCCV

Known mistypes of this pair

  • algaalag · algga · allga · laga

Frequency comparison

alga#34,872
allí#453

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "alga" and "allí" be used interchangeably?
No - they are not even the same part of speech. "alga" is a noun and "allí" an adverb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "alga" or "allí"?
"allí" is the more common of the two: it sits at frequency rank #453 in our Spanish list, against #34,872 for "alga". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Remembering alga vs allí

The fastest way to pick the right one every time.

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

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

Source: FrequencyWords open word-frequency list