sílicavssilícioTell them apart

Which to use

“sílica” and “silício” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#36,250
“sílica” frequency rank
#17,640
“silício” frequency rank
53890
confusion score

Side-by-Side Comparison

Feature sílica silício
Definition composto conhecido como dióxido de silício (SiO₂), encontrado em areias e silicatos, é empregado na fabricação de vidros elemento químico de símbolo Si, possui o número atômico 14 e massa atômica relativa 28,086; é o segundo elemento mais abundante da terra, é encontrado na argila, no granito no quartzo e na areia; é o principal elemento do vidro, cimento, cerâmica e da maioria dos componentes semicondutores eletrônicos

Where the eye mixes sílica and silício

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

6 ch
sílica
7 ch
silício

Look-alike desk: sílica vs silício

A purely visual mix-up. sílica (/ˈsi.li.kɐ/) and silício (/siˈłisju/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 53890, derived from the frequency rank of both members and their visual similarity.

sílica is recorded at frequency rank #36,250, classified as anoun, pronounced /ˈsi.li.kɐ/. silício is at rank #17,640, tagged as anoun, pronounced /siˈłisju/.

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 53890, this pair ranks #11,699 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of sílica vs silício

Shared letters: cilsí. Private to "sílica": a. Private to "silício": o.

"sílica" · 6 letters · shape CVCVCV  ·  "silício" · 7 letters · shape CVCVCVV

Frequently Asked Questions

Do "sílica" and "silício" mean the same thing in a sentence?
No. They are said differently (/ˈsi.li.kɐ/ versus /siˈłisju/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "sílica" vs "silício" - which ranks higher?
"silício" is the more common of the two: it sits at frequency rank #17,640 in our Portuguese list, against #36,250 for "sílica". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "sílica" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "silício" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #11,699 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "sílica" and "silício" also get mixed up with nearby pairs, the highest-scored neighbour is "sílica vs súplica". Nearby pair

Confusion rank #11,699 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list