HanoivshaoConfusable pair

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

Which to use

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

#17,376
“Hanoi” frequency rank
#31,588
“hao” frequency rank
48964
confusion score

Side-by-Side Comparison

Feature Hanoi hao
Definition The capital city of Vietnam. A former currency unit of Vietnam, worth one tenth of a dong.

Letter map: Hanoi vs hao

Shared letters muted; letters that set Hanoi and hao apart highlighted. Shared run: 3.

5 ch
Hanoi
3 ch
hao

Role in the sentence - Hanoi and hao

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: Hanoi is aname and haoanoun. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 48964, derived from the frequency rank of both members and their visual similarity.

Hanoi is recorded at frequency rank #17,376, classified as aname, pronounced /hɑːˈnɔɪ/. hao is at rank #31,588, 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 48964, this pair ranks #188,122 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of Hanoi vs hao

Shared letters: aho. Private to "Hanoi": in. Private to "hao": -.

"Hanoi" · 5 letters · shape CVCVV  ·  "hao" · 3 letters · shape CVV

Known mistypes of this pair

  • Hanoiahnoi · hanio · hannoi · haoni · hhanoi · hnaoi

Frequently Asked Questions

Is swapping "Hanoi" for "hao" ever safe?
No - they are not even the same part of speech. "Hanoi" is a name and "hao" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "Hanoi" or "hao" show up more?
"Hanoi" is the more common of the two: it sits at frequency rank #17,376 in our English list, against #31,588 for "hao". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pair "Hanoi" vs "hao" is on the table, pick a follow-up below.

  • Full dictionary entry for "Hanoi" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "hao" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #188,122 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "Hanoi" and "hao" also get mixed up with nearby pairs, the highest-scored neighbour is "hao vs HRW". 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 #188,122 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