flarevsflueWhat's the difference?

Which to use

“flare” and “flue” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#12,242
“flare” frequency rank
#38,401
“flue” frequency rank
50643
confusion score

Side-by-Side Comparison

Feature flare flue
Definition A sudden bright light. A pipe or duct that carries gaseous combustion products away from the point of combustion (such as a furnace).

Where the eye mixes flare and flue

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

5 ch
flare
4 ch
flue

Spelling & Dictionary Insight

A purely visual mix-up. flare (/flɛə̯/) and flue (/fluː/) 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 50643, derived from the frequency rank of both members and their visual similarity.

flare is recorded at frequency rank #12,242, classified as anoun, pronounced /flɛə̯/. flue is at rank #38,401, tagged as anoun, pronounced /fluː/.

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 50643, this pair ranks #172,425 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of flare vs flue

Shared letters: efl. Private to "flare": ar. Private to "flue": u.

"flare" · 5 letters · shape CCVCV  ·  "flue" · 4 letters · shape CCVV

Known mistypes of this pair

  • flarefalre · fflare · flaer · flarre · fllare · flrae · lfare
  • fluefflue · fleu · fllue · lfue

Frequently Asked Questions

Can "flare" and "flue" be used interchangeably?
No. They are said differently (/flɛə̯/ versus /fluː/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "flare" or "flue"?
"flare" is the more common of the two: it sits at frequency rank #12,242 in our English list, against #38,401 for "flue". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

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

Source: FrequencyWords open word-frequency list