LOCvslocumConfusable pair

Which to use

“LOC” and “locum” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#21,262
“LOC” frequency rank
#47,732
“locum” frequency rank
68994
confusion score

Side-by-Side Comparison

Feature LOC locum
Definition Initialism of level of consciousness; also LoC. Ellipsis of locum tenens.

Letter map: LOC vs locum

Shared letters muted; letters that set LOC and locum apart highlighted. Shared run: 3. LOC runs 3 letters (CVC) against locum's 5 (CVCVC) - the length gap alone is often enough to separate them once you know to check it.

3 ch
LOC
5 ch
locum

Pair insight - LOC / locum

LOC and locum are indexed as a confusable English pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by 2 extra letter(s) - “LOC” sits inside “locum”. Our composite confusion score for this pair is 68994, derived from the frequency rank of both members and their visual similarity.

LOC is recorded at frequency rank #21,262, classified as anoun. locum is at rank #47,732, tagged as anoun, pronounced /ˈləʊkəm/.

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 68994, this pair ranks #56,465 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of LOC vs locum

Shared letters: clo. Private to "LOC": -. Private to "locum": mu.

"LOC" · 3 letters · shape CVC  ·  "locum" · 5 letters · shape CVCVC

Known mistypes of this pair

  • locum ← lcoum · llocum · loccum · locmu · locumm · loucm · olcum

Frequently Asked Questions

Do "LOC" and "locum" mean the same thing in a sentence?
No. They differ by 2 extra letter(s) - “LOC” sits inside “locum”, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.
Frequency check: "LOC" vs "locum" - which ranks higher?
"LOC" is the more common of the two: it sits at frequency rank #21,262 in our English list, against #47,732 for "locum". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Done with this confusable. These links stay specific to "LOC" and "locum".

  • Full dictionary entry for "LOC" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "locum" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #56,465 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "LOC" and "locum" also get mixed up with nearby pairs, the highest-scored neighbour is "lockup vs locum". 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 #56,465 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