ob vs oss, What's the Difference?

Which to use

“ob” is a conjunction and “oss” is a noun - they look or sound alike but fill different roles in a sentence.

#139
“ob” frequency rank: #41,375
“oss” frequency rank: 41514
confusion score

Side-by-Side Comparison

Feature	ob	oss
Definition	leitet indirekte Fragesätze sowie Ungewissheit, Zweifel oder dergleichen ausdrückende Nebensätze ein (in Form von Subjekt-, Objekt- und Attributsätzen)	der Knochen

Letter map: ob vs oss

Shared letters muted; letters that set ob and oss apart highlighted. Shared run: 1.

2 ch

3 ch

oss

Role in the sentence - ob and oss

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ob is aconjunction and ossanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 41514, derived from the frequency rank of both members and their visual similarity.

ob is recorded at frequency rank #139, classified as aconj, pronounced [ɔp]. oss is at rank #41,375, tagged as anoun, pronounced […].

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 41514, this pair ranks #1,477,149 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of ob vs oss

Shared letters: o. Private to "ob": b. Private to "oss": s.

"ob" · 2 letters · shape VC · "oss" · 3 letters · shape VCC

Frequently Asked Questions

Is swapping "ob" for "oss" ever safe?

No - they are not even the same part of speech. "ob" is a conjunction and "oss" a noun, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "ob" or "oss"?

"ob" is the more common of the two: it sits at frequency rank #139 in our German list, against #41,375 for "oss". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Done with this confusable. These links stay specific to "ob" and "oss".

Full dictionary entry for "ob" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "oss" - compare definitions side by side with the headword page. Word entry
This pair ranks #1,477,149 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
"ob" and "oss" also get mixed up with nearby pairs, the highest-scored neighbour is "oss vs puzzles". Nearby pair

Confusion rank #1,477,149 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.