fax vs FCO, What's the Difference?

Which to use

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

#12,419
“fax” frequency rank: #49,916
“FCO” frequency rank: 62335
confusion score

Side-by-Side Comparison

Feature	fax	FCO
Definition	The hair of the head.	Initialism of Foreign and Commonwealth Office.

Letter map: fax vs FCO

Shared letters muted; letters that set fax and FCO apart highlighted. Shared run: 1.

3 ch

fax

3 ch

FCO

Spelling & Dictionary Insight

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: fax is anoun and FCOaname. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 62335, derived from the frequency rank of both members and their visual similarity.

fax is recorded at frequency rank #12,419, classified as anoun, pronounced /fæks/. FCO is at rank #49,916, tagged as aname.

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 62335, this pair ranks #89,087 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of fax vs FCO

Shared letters: f. Private to "fax": ax. Private to "FCO": co.

"fax" · 3 letters · shape CVC · "FCO" · 3 letters · shape CCV

Frequently Asked Questions

Can "fax" and "FCO" be used interchangeably?

No - they are not even the same part of speech. "fax" is a noun and "FCO" a name, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "fax" or "FCO"?

"fax" is the more common of the two: it sits at frequency rank #12,419 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.