Which to use
“interface” and “interfaces” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #5,887
- “interface” frequency rank
- #15,635
- “interfaces” frequency rank
- 21522
- confusion score
Side-by-Side Comparison
| Feature | interface | interfaces |
|---|---|---|
| Definition | The point of interconnection or contact between entities. | plural of interface |
Same sound, different letters: interface vs interfaces
Muted letters are shared; highlighted letters are the only spelling cue when pronunciation matches. Shared run: 9 letters.
Same sound, different spelling - interface / interfaces
This is the hard kind. interface and interfaces are pronounced identically (/ˈɪntəfeɪs/) and both work as anoun. Neither the ear nor the grammar will rescue you; only the meaning does, so the glosses below are the whole decision. They differ by 1 extra letter(s) - “interface” sits inside “interfaces”. Our composite confusion score for this pair is 21522, derived from the frequency rank of both members and their visual similarity.
interface is recorded at frequency rank #5,887, classified as anoun, pronounced /ˈɪntəfeɪs/. interfaces is at rank #15,635, tagged as anoun, pronounced /ˈɪntəfeɪs/.
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 21522, this pair ranks #423,277 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of interface vs interfaces
Shared letters: acefinrt. Private to "interface": -. Private to "interfaces": s.
"interface" · 9 letters · shape VCCVCCVCV · "interfaces" · 10 letters · shape VCCVCCVCVC
Known mistypes of this pair
- interface ← inetrface · innterface · intefrace · interafce · interfacce · interfaec · interfcae · interfface
- interfaces ← inetrfaces · innterfaces · intefraces · interafces · interfacces · interfacess · interfacse · interfaecs
Frequently Asked Questions
Is swapping "interface" for "interfaces" ever safe?
Which is more common, "interface" or "interfaces"?
After this comparison
You've separated the homophone pair "interface" / "interfaces". Follow the links when you need the full entry or a neighbour that trips the same ear.
- Full dictionary entry for "interface" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "interfaces" - compare definitions side by side with the headword page. Word entry
- This pair ranks #423,277 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "interface" and "interfaces" also get mixed up with nearby pairs, the highest-scored neighbour is "interacts vs interfaces". 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 #423,277 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.