fogo vs Form, What's the Difference?

Which to use

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

#938
“fogo” frequency rank: #18,599
“Form” frequency rank: 19537
confusion score

Side-by-Side Comparison

Feature	fogo	Form
Definition	coisa difícil ou trabalhosa	forma

Where the eye mixes fogo and Form

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

4 ch

fogo

4 ch

Form

Look-alike desk: fogo vs Form

These two trip readers on the page rather than in the ear: fogo is /ˈfo.ɡu/ while Form is /fɔʁm/. 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 (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 19537, derived from the frequency rank of both members and their visual similarity.

fogo is recorded at frequency rank #938, classified as anadj, pronounced /ˈfo.ɡu/. Form is at rank #18,599, tagged as anoun, pronounced /fɔʁm/.

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 19537, this pair ranks #51,146 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of fogo vs Form

Shared letters: fo. Private to "fogo": g. Private to "Form": mr.

"fogo" · 4 letters · shape CVCV · "Form" · 4 letters · shape CVCC

Known mistypes of this pair

fogo ← ffogo · fgoo · foggo · foog · ofgo
Form ← fform · fomr · formm · forrm · from · ofrm

Frequently Asked Questions

Is swapping "fogo" for "Form" ever safe?

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

Which is more common, "fogo" or "Form"?

"fogo" is the more common of the two: it sits at frequency rank #938 in our Portuguese list, against #18,599 for "Form". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

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 "fogo" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "Form" - compare definitions side by side with the headword page. Word entry
This pair ranks #51,146 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"fogo" and "Form" also get mixed up with nearby pairs, the highest-scored neighbour is "fern vs Form". 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 #51,146 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.