Which to use
“open” is an adjective and “OTAN” is an abbrev - they look or sound alike but fill different roles in a sentence.
- #3,348
- “open” frequency rank
- #12,510
- “OTAN” frequency rank
- 15858
- confusion score
Side-by-Side Comparison
| Feature | open | OTAN |
|---|---|---|
| Definition | aberto | sigla para a Organização do Tratado do Atlântico Norte |
Where the spellings diverge
Shared letters are muted; the letters that actually set open and OTAN apart are highlighted. They share 2 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: open is anadjective and OTANanabbrev. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 15858, derived from the frequency rank of both members and their visual similarity.
open is recorded at frequency rank #3,348, classified as anadj, pronounced /ˈəʊ.pən/. OTAN is at rank #12,510, tagged as anabbrev.
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 15858, this pair ranks #55,863 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of open vs OTAN
Shared letters: no. Private to "open": ep. Private to "OTAN": at.
"open" · 4 letters · shape VCVC · "OTAN" · 4 letters · shape VCVC
Known mistypes of this pair
Frequency comparison
Frequently Asked Questions
Can "open" and "OTAN" be used interchangeably?
Which is more common, "open" or "OTAN"?
Remembering open vs OTAN
The fastest way to pick the right one every time.
- Check the role first: if you need an adjective, it's “open”; for an abbrev, it's “OTAN”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “open” entry
- Browse more pairs most likely to be confused. Most confusable