FDAvsfoxTell them apart

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

Which to use

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

#8,665
“FDA” frequency rank
#2,204
“fox” frequency rank
10869
confusion score

Side-by-Side Comparison

Feature FDA fox
Definition Initialism of Food and Drug Administration, a United States federal regulatory body. A small-to-medium-sized canine mammal, related to dogs and wolves, with a flattened skull, upright triangular ears, a pointed, slightly upturned snout, and a long bushy tail, of the following groups:

Letter map: FDA vs fox

Shared letters muted; letters that set FDA and fox apart highlighted. Shared run: 1.

3 ch
FDA
3 ch
fox

Part-of-speech tell for FDA / fox

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: FDA is aname and foxanoun. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 10869, derived from the frequency rank of both members and their visual similarity.

FDA is recorded at frequency rank #8,665, classified as aname. fox is at rank #2,204, tagged as anoun, pronounced /fɒks/.

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 10869, this pair ranks #490,100 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of FDA vs fox

Shared letters: f. Private to "FDA": ad. Private to "fox": ox.

"FDA" · 3 letters · shape CCV  ·  "fox" · 3 letters · shape CVC

Frequently Asked Questions

Can "FDA" and "fox" be used interchangeably?
No - they are not even the same part of speech. "FDA" is a name and "fox" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "FDA" or "fox"?
"fox" is the more common of the two: it sits at frequency rank #2,204 in our English list, against #8,665 for "FDA". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pair "FDA" vs "fox" is on the table, pick a follow-up below.

  • Full dictionary entry for "FDA" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fox" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #490,100 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "FDA" and "fox" also get mixed up with nearby pairs, the highest-scored neighbour is "FDA vs foh". Nearby pair

Confusion rank #490,100 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