fog vs frog, What's the Difference?

Which to use

“fog” and “frog” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#46,768
“fog” frequency rank: #42,890
“frog” frequency rank: 89658
confusion score

Side-by-Side Comparison

Feature	fog	frog
Definition	Brouillard, brume.	Surnom dont des Canadiens non francophones affublent les Québécois francophones.

Where the spellings diverge

Shared letters are muted; the letters that actually set fog and frog apart are highlighted. They share 3 letters in sequence, which is exactly why the eye skips the difference.

3 ch

fog

4 ch

frog

Spelling & Dictionary Insight

A purely visual mix-up. fog (\fɔɡ\) and frog (\fɹɒɡ\) 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 89658, derived from the frequency rank of both members and their visual similarity.

fog is recorded at frequency rank #46,768, classified as anoun, pronounced \fɔɡ\. frog is at rank #42,890, tagged as anoun, pronounced \fɹɒɡ\.

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 89658, this pair ranks #5,559 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of fog vs frog

Shared letters: fgo. Private to "fog": -. Private to "frog": r.

"fog" · 3 letters · shape CVC · "frog" · 4 letters · shape CCVC

Known mistypes of this pair

frog ← ffrog · forg · frgo · frogg · frrog · rfog

Frequency comparison

fog#46,768

frog#42,890

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "fog" and "frog" be used interchangeably?

No. They are said differently (\fɔɡ\ versus \fɹɒɡ\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.

Which is more common, "fog" or "frog"?

"frog" is the more common of the two: it sits at frequency rank #42,890 in our French list, against #46,768 for "fog". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering fog vs frog

The fastest way to pick the right one every time.

Read both glosses above and match the meaning you intend, only context separates this pair.
See each word in full, definition, IPA, etymology and its other confusables. Full “fog” entry
Browse more pairs most likely to be confused. Most confusable