FCOvsflogWhich spelling fits?

Quick tell: FCO is a name, flog is a verb, so they fill different roles in a sentence.

Which to use

“FCO” is a name and “flog” is a verb - they look or sound alike but fill different roles in a sentence.

#49,916
“FCO” frequency rank
#41,629
“flog” frequency rank
91545
confusion score

Side-by-Side Comparison

Feature FCO flog
Definition Initialism of Foreign and Commonwealth Office. To whip or scourge as punishment.

Letter map: FCO vs flog

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

3 ch
FCO
4 ch
flog

Role in the sentence - FCO and flog

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: FCO is aname and flogaverb. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 91545, derived from the frequency rank of both members and their visual similarity.

FCO is recorded at frequency rank #49,916, classified as aname. flog is at rank #41,629, tagged as averb, pronounced /flɒɡ/.

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 91545, this pair ranks #3,229 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of FCO vs flog

Shared letters: fo. Private to "FCO": c. Private to "flog": gl.

"FCO" · 3 letters · shape CCV  ·  "flog" · 4 letters · shape CCVC

Known mistypes of this pair

  • flog ← fflog · flgo · fllog · flogg · folg · lfog

Frequently Asked Questions

Can "FCO" and "flog" be used interchangeably?
No - they are not even the same part of speech. "FCO" is a name and "flog" a verb, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "FCO" vs "flog" - which ranks higher?
"flog" is the more common of the two: it sits at frequency rank #41,629 in our English list, against #49,916 for "FCO". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Pair "FCO" vs "flog" is on the table, pick a follow-up below.

  • Full dictionary entry for "FCO" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "flog" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #3,229 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "FCO" and "flog" also get mixed up with nearby pairs, the highest-scored neighbour is "FCO vs FOMO". 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 #3,229 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