Which to use
“arc” and “ATR” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #5,005
- “arc” frequency rank
- #46,320
- “ATR” frequency rank
- 51325
- confusion score
Side-by-Side Comparison
| Feature | arc | ATR |
|---|---|---|
| Definition | That part of a circle which a heavenly body appears to pass through as it moves above and below the horizon. | Initialism of advanced tongue root. |
Letter map: arc vs ATR
Shared letters muted; letters that set arc and ATR apart highlighted. Shared run: 2.
Corpus notes: arc and ATR
arc and ATR are indexed as a confusable English pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 51325, derived from the frequency rank of both members and their visual similarity.
arc is recorded at frequency rank #5,005, classified as anoun, pronounced /ɑːk/. ATR is at rank #46,320, tagged as anoun.
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 51325, this pair ranks #166,442 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of arc vs ATR
Shared letters: ar. Private to "arc": c. Private to "ATR": t.
"arc" · 3 letters · shape VCC · "ATR" · 3 letters · shape VCC
Frequently Asked Questions
Can "arc" and "ATR" be used interchangeably?
Which is more common, "arc" or "ATR"?
After this comparison
Done with this confusable. These links stay specific to "arc" and "ATR".
- Full dictionary entry for "arc" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "ATR" - compare definitions side by side with the headword page. Word entry
- This pair ranks #166,442 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "arc" and "ATR" also get mixed up with nearby pairs, the highest-scored neighbour is "Asta vs ATR". Nearby pair
Confusion rank #166,442 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.