IBvsincWhich spelling fits?

Quick tell: IB is a noun, inc is a verb, so they fill different roles in a sentence.

Which to use

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

#16,046
“IB” frequency rank
#1,760
“inc” frequency rank
17806
confusion score

Side-by-Side Comparison

Feature IB inc
Definition An International Baccalaureate program Abbreviation of increase.

Letter map: IB vs inc

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

2 ch
IB
3 ch
inc

Role in the sentence - IB and inc

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: IB is anoun and incaverb. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 17806, derived from the frequency rank of both members and their visual similarity.

IB is recorded at frequency rank #16,046, classified as anoun. inc is at rank #1,760, tagged as averb.

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 17806, this pair ranks #449,000 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of IB vs inc

Shared letters: i. Private to "IB": b. Private to "inc": cn.

"IB" · 2 letters · shape VC  ·  "inc" · 3 letters · shape VCC

Frequently Asked Questions

Do "IB" and "inc" mean the same thing in a sentence?
No - they are not even the same part of speech. "IB" is a noun and "inc" a verb, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "IB" or "inc" show up more?
"inc" is the more common of the two: it sits at frequency rank #1,760 in our English list, against #16,046 for "IB". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pair "IB" vs "inc" is on the table, pick a follow-up below.

  • Full dictionary entry for "IB" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "inc" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #449,000 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "IB" and "inc" also get mixed up with nearby pairs, the highest-scored neighbour is "IB vs ith". Nearby pair

Confusion rank #449,000 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