Which to use
“arco” is an adverb and “arson” is a noun - they look or sound alike but fill different roles in a sentence.
- #49,190
- “arco” frequency rank
- #17,076
- “arson” frequency rank
- 66266
- confusion score
Side-by-Side Comparison
| Feature | arco | arson |
|---|---|---|
| Definition | A note in string instrument musical notation indicating that the bow is to be used in the usual way, usually following a passage that is played pizzicato. | The crime of deliberately starting a fire with intent to cause damage. |
Where the spellings diverge
Shared letters are muted; the letters that actually set arco and arson apart are highlighted. They share 3 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
arco and arson form a confusable pair in the English index, two distinct headwords that are easily confused because they look alike, sound alike, or both. They differ by 1 letter(s) in length - close enough that the eye skips over the difference, far enough that meaning fully diverges. Our composite confusion score for this pair is 66266, derived from the frequency rank of both members and their visual similarity.
arco is recorded at frequency rank #49,190, classified as anadv. arson is at rank #17,076, tagged as anoun, pronounced /ˈɑɹsən/.
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 66266, this pair ranks #68,803 of 530,003 scored English confusable pairs - among the most confusable pairs.
Frequency comparison
Frequently Asked Questions
Can "arco" and "arson" be used interchangeably?
Remembering arco vs arson
The fastest way to pick the right one every time.
- Check the role first: if you need an adverb, it's “arco”; for a noun, it's “arson”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “arco” entry
- Browse more pairs most likely to be confused. Most confusable