interactionvsinteractionsWhich spelling fits?

Which to use

“interaction” and “interactions” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#9,180
“interaction” frequency rank
#9,339
“interactions” frequency rank
18519
confusion score

Side-by-Side Comparison

Feature interaction interactions
Definition Action ou influence réciproque qui peut s’établir entre deux objets ou plus. Pluriel de interaction.

Same sound, different letters: interaction vs interactions

Muted letters are shared; highlighted letters are the only spelling cue when pronunciation matches. Shared run: 11 letters.

11 ch
interaction
12 ch
interactions

Homophone desk: interaction vs interactions

This is the hard kind. interaction and interactions are pronounced identically (\ɛ̃.tɛ.ʁak.sjɔ̃\) 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) - “interaction” sits inside “interactions”. Our composite confusion score for this pair is 18519, derived from the frequency rank of both members and their visual similarity.

interaction is recorded at frequency rank #9,180, classified as anoun, pronounced \ɛ̃.tɛ.ʁak.sjɔ̃\. interactions is at rank #9,339, tagged as anoun, pronounced \ɛ̃.tɛ.ʁak.sjɔ̃\.

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 18519, this pair ranks #377,895 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of interaction vs interactions

Shared letters: aceinort. Private to "interaction": -. Private to "interactions": s.

"interaction" · 11 letters · shape VCCVCVCCVVC  ·  "interactions" · 12 letters · shape VCCVCVCCVVCC

Known mistypes of this pair

  • interactioninetraction · innteraction · intearction · interacction · interaciton · interactino · interactionn · interactoin
  • interactionsinetractions · innteractions · intearctions · interacctions · interacitons · interactinos · interactionns · interactionss

Frequently Asked Questions

Is swapping "interaction" for "interactions" ever safe?
No. They are pronounced the same (\ɛ̃.tɛ.ʁak.sjɔ̃\), which is exactly why they get swapped in writing, but the dictionary meanings above are different, and pronunciation is no guide here.
Frequency check: "interaction" vs "interactions" - which ranks higher?
"interaction" is the more common of the two: it sits at frequency rank #9,180 in our French list, against #9,339 for "interactions". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

"interaction" and "interactions" share a sound, keep the gloss open, then jump to the headword or a nearby trap.

  • Full dictionary entry for "interaction" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "interactions" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #377,895 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "interaction" and "interactions" also get mixed up with nearby pairs, the highest-scored neighbour is "interactifs vs interactions". 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 #377,895 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list