IB vs ii, What's the Difference?

Which to use

“IB” is a noun and “ii” is an unknown - they look or sound alike but fill different roles in a sentence.

#13,398
“IB” frequency rank: #520
“ii” frequency rank: 13918
confusion score

Side-by-Side Comparison

Feature	IB	ii
Definition	indischer Inlandsgeheimdienst	Nominativ Plural Maskulinum des Pronomens is

Letter map: IB vs ii

Shared letters muted; letters that set IB and ii apart highlighted. Shared run: 1.

2 ch

Role in the sentence - IB and ii

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: IB is anoun and iianunknown. On the page they differ by a single letter - b in “IB” becomes i in “ii”. Our composite confusion score for this pair is 13918, derived from the frequency rank of both members and their visual similarity.

IB is recorded at frequency rank #13,398, classified as anoun, pronounced [aɪ̯ˈbiː]. ii is at rank #520, tagged as anunknown, 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 13918, this pair ranks #1,954,797 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of IB vs ii

Shared letters: i. Private to "IB": b. Private to "ii": -.

"IB" · 2 letters · shape VC · "ii" · 2 letters · shape VV

Frequently Asked Questions

Is swapping "IB" for "ii" ever safe?

No - they are not even the same part of speech. "IB" is a noun and "ii" an unknown, so a sentence built for one is usually ungrammatical with the other.

Frequency check: "IB" vs "ii" - which ranks higher?

"ii" is the more common of the two: it sits at frequency rank #520 in our German list, against #13,398 for "IB". 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 "IB" and "ii".

Full dictionary entry for "IB" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "ii" - compare definitions side by side with the headword page. Word entry
This pair ranks #1,954,797 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
"IB" and "ii" also get mixed up with nearby pairs, the highest-scored neighbour is "IB vs IMs". Nearby pair

Confusion rank #1,954,797 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.