ObvsouWhich spelling fits?

Quick tell: Ob is a name, ou is a conjunction, so they fill different roles in a sentence.

Which to use

“Ob” is a name and “ou” is a conjunction - they look or sound alike but fill different roles in a sentence.

#31,155
“Ob” frequency rank
#45
“ou” frequency rank
31200
confusion score

Side-by-Side Comparison

Feature Ob ou
Definition Fleuve de Sibérie, qui se jette dans l’océan Arctique. Indique une disjonction inclusive sur plusieurs concepts quand la cohabitation des concepts est envisageable : un ou plus dans la liste sont envisageables à la fois.

Letter map: Ob vs ou

Shared letters muted; letters that set Ob and ou apart highlighted. Shared run: 1.

2 ch
Ob
2 ch
ou

Role in the sentence - Ob and ou

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: Ob is aname and ouaconjunction. On the page they differ by a single letter - b in “Ob” becomes u in “ou”. Our composite confusion score for this pair is 31200, derived from the frequency rank of both members and their visual similarity.

Ob is recorded at frequency rank #31,155, classified as aname. ou is at rank #45, tagged as aconj, pronounced \u\.

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 31200, this pair ranks #305,334 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of Ob vs ou

Shared letters: o. Private to "Ob": b. Private to "ou": u.

"Ob" · 2 letters · shape VC  ·  "ou" · 2 letters · shape VV

Frequently Asked Questions

Can "Ob" and "ou" be used interchangeably?
No - they are not even the same part of speech. "Ob" is a name and "ou" a conjunction, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "Ob" vs "ou" - which ranks higher?
"ou" is the more common of the two: it sits at frequency rank #45 in our French list, against #31,155 for "Ob". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Done with this confusable. These links stay specific to "Ob" and "ou".

  • Full dictionary entry for "Ob" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ou" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #305,334 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "Ob" and "ou" also get mixed up with nearby pairs, the highest-scored neighbour is "Ob vs och". Nearby pair

Confusion rank #305,334 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list