nbspvsNTSBTell them apart

Quick tell: nbsp is a noun, NTSB is a name, so they fill different roles in a sentence.

Which to use

“nbsp” is a noun and “NTSB” is a name - they look or sound alike but fill different roles in a sentence.

#25,856
“nbsp” frequency rank
#39,935
“NTSB” frequency rank
65791
confusion score

Side-by-Side Comparison

Feature nbsp NTSB
Definition Initialism of non-breaking space. Initialism of National Transportation Safety Board.

Letter map: nbsp vs NTSB

Shared letters muted; letters that set nbsp and NTSB apart highlighted. Shared run: 2. nbsp and NTSB follow the identical consonant-vowel pattern (CCCC). Same shape at a glance is often the real trap, independent of shared letters.

4 ch
nbsp
4 ch
NTSB

Grammar separator: nbsp vs NTSB

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: nbsp is anoun and NTSBaname. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 65791, derived from the frequency rank of both members and their visual similarity.

nbsp is recorded at frequency rank #25,856, classified as anoun. NTSB is at rank #39,935, 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 65791, this pair ranks #71,062 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of nbsp vs NTSB

Shared letters: bns. Private to "nbsp": p. Private to "NTSB": t.

"nbsp" · 4 letters · shape CCCC  ·  "NTSB" · 4 letters · shape CCCC

Known mistypes of this pair

  • nbsp ← bnsp · nbbsp · nbps · nbspp · nbssp · nnbsp · nsbp
  • NTSB ← nntsb · nstb · ntbs · ntsbb · ntssb · nttsb · tnsb

Frequently Asked Questions

Do "nbsp" and "NTSB" mean the same thing in a sentence?
No - they are not even the same part of speech. "nbsp" is a noun and "NTSB" a name, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "nbsp" or "NTSB" show up more?
"nbsp" is the more common of the two: it sits at frequency rank #25,856 in our English list, against #39,935 for "NTSB". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

You've compared "nbsp" and "NTSB". Here's where to go from here.

  • Full dictionary entry for "nbsp" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "NTSB" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #71,062 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "nbsp" and "NTSB" also get mixed up with nearby pairs, the highest-scored neighbour is "Nasr vs NTSB". 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 #71,062 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list