ICJvsIncaTell them apart

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

Which to use

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

#49,411
“ICJ” frequency rank
#28,593
“Inca” frequency rank
78004
confusion score

Side-by-Side Comparison

Feature ICJ Inca
Definition Initialism of International Court of Justice. A member of the group of Quechuan peoples of highland Peru who established an empire from northern Ecuador to central Chile before the Spanish conquest.

Letter map: ICJ vs Inca

Shared letters muted; letters that set ICJ and Inca apart highlighted. Shared run: 2. ICJ runs 3 letters (VCC) against Inca's 4 (VCCV) - the length gap alone is often enough to separate them once you know to check it.

3 ch
ICJ
4 ch
Inca

Part-of-speech tell for ICJ / Inca

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ICJ is aname and Incaanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 78004, derived from the frequency rank of both members and their visual similarity.

ICJ is recorded at frequency rank #49,411, classified as aname. Inca is at rank #28,593, tagged as anoun, pronounced /ˈɪŋkə/.

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 78004, this pair ranks #25,740 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of ICJ vs Inca

Shared letters: ci. Private to "ICJ": j. Private to "Inca": an.

"ICJ" · 3 letters · shape VCC  ·  "Inca" · 4 letters · shape VCCV

Known mistypes of this pair

  • Inca ← icna · inac · incca · innca · nica

Frequently Asked Questions

Is swapping "ICJ" for "Inca" ever safe?
No - they are not even the same part of speech. "ICJ" is a name and "Inca" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "ICJ" or "Inca" show up more?
"Inca" is the more common of the two: it sits at frequency rank #28,593 in our English list, against #49,411 for "ICJ". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pair "ICJ" vs "Inca" is on the table, pick a follow-up below.

  • Full dictionary entry for "ICJ" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Inca" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #25,740 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "ICJ" and "Inca" also get mixed up with nearby pairs, the highest-scored neighbour is "ICJ vs ith". 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 #25,740 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