Which to use
“FCO” is a name and “fob” is a noun - they look or sound alike but fill different roles in a sentence.
- #49,916
- “FCO” frequency rank
- #25,388
- “fob” frequency rank
- 75304
- confusion score
Side-by-Side Comparison
| Feature | FCO | fob |
|---|---|---|
| Definition | Initialism of Foreign and Commonwealth Office. | A little pocket near the waistline of a pair of trousers or in a waistcoat or vest to hold money or valuables, especially a pocket watch. |
Letter map: FCO vs fob
Shared letters muted; letters that set FCO and fob apart highlighted. Shared run: 2.
Grammar separator: FCO vs fob
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: FCO is aname and fobanoun. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 75304, derived from the frequency rank of both members and their visual similarity.
FCO is recorded at frequency rank #49,916, classified as aname. fob is at rank #25,388, tagged as anoun, pronounced /fɒb/.
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 75304, this pair ranks #33,549 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of FCO vs fob
Shared letters: fo. Private to "FCO": c. Private to "fob": b.
"FCO" · 3 letters · shape CCV · "fob" · 3 letters · shape CVC
Frequently Asked Questions
Is swapping "FCO" for "fob" ever safe?
Frequency check: "FCO" vs "fob" - which ranks higher?
After this comparison
Pair "FCO" vs "fob" 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 "fob" - compare definitions side by side with the headword page. Word entry
- This pair ranks #33,549 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "FCO" and "fob" also get mixed up with nearby pairs, the highest-scored neighbour is "FCO vs FOMO". Nearby pair
Confusion rank #33,549 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.