Which to use
“nbsp” is a noun and “NSF” is a name - they look or sound alike but fill different roles in a sentence.
- #25,856
- “nbsp” frequency rank
- #27,233
- “NSF” frequency rank
- 53089
- confusion score
Side-by-Side Comparison
| Feature | nbsp | NSF |
|---|---|---|
| Definition | Initialism of non-breaking space. | Initialism of National Science Foundation. |
Letter map: nbsp vs NSF
Shared letters muted; letters that set nbsp and NSF apart highlighted. Shared run: 2. nbsp runs 4 letters (CCCC) against NSF's 3 (CCC) - the length gap alone is often enough to separate them once you know to check it.
Part-of-speech tell for nbsp / NSF
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: nbsp is anoun and NSFaname. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 53089, derived from the frequency rank of both members and their visual similarity.
nbsp is recorded at frequency rank #25,856, classified as anoun. NSF is at rank #27,233, tagged as aname.
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 53089, this pair ranks #151,766 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of nbsp vs NSF
Shared letters: ns. Private to "nbsp": bp. Private to "NSF": f.
"nbsp" · 4 letters · shape CCCC · "NSF" · 3 letters · shape CCC
Known mistypes of this pair
- nbsp ← bnsp · nbbsp · nbps · nbspp · nbssp · nnbsp · nsbp
Frequently Asked Questions
Is swapping "nbsp" for "NSF" ever safe?
Frequency check: "nbsp" vs "NSF" - which ranks higher?
After this comparison
You've compared "nbsp" and "NSF". Here's where to go from here.
- Full dictionary entry for "nbsp" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "NSF" - compare definitions side by side with the headword page. Word entry
- This pair ranks #151,766 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "nbsp" and "NSF" also get mixed up with nearby pairs, the highest-scored neighbour is "NPL vs NSF". Nearby pair
- Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes
Confusion rank #151,766 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.