interactionvsiterationWhat's the difference?

Which to use

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

#4,387
“interaction” frequency rank
#17,395
“iteration” frequency rank
21782
confusion score

Side-by-Side Comparison

Feature interaction iteration
Definition The situation or occurrence in which two or more objects or events act upon one another to produce an effect; the effect resulting from such a situation or occurrence. A recital or a second performance; a repetition.

Where the eye mixes interaction and iteration

Muted = shared; highlighted = the visual trap. They share 9 letters in sequence.

11 ch
interaction
9 ch
iteration

Look-alike desk: interaction vs iteration

A purely visual mix-up. interaction (/ˌɪn.təˈɹæk.ʃən/) and iteration (/ˌɪt.əˈɹeɪ.ʃən/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 2 letter(s) in length. Our composite confusion score for this pair is 21782, derived from the frequency rank of both members and their visual similarity.

interaction is recorded at frequency rank #4,387, classified as anoun, pronounced /ˌɪn.təˈɹæk.ʃən/. iteration is at rank #17,395, tagged as anoun, pronounced /ˌɪt.əˈɹeɪ.ʃən/.

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 21782, this pair ranks #421,389 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of interaction vs iteration

Shared letters: aeinort. Private to "interaction": c. Private to "iteration": -.

"interaction" · 11 letters · shape VCCVCVCCVVC  ·  "iteration" · 9 letters · shape VCVCVCVVC

Known mistypes of this pair

  • interactioninetraction · innteraction · intearction · interacction · interaciton · interacsion · interactino · interactionn
  • iterationietration · iteartion · iteraiton · iterasion · iteratino · iterationn · iteratoin · iterattion

Frequently Asked Questions

Is swapping "interaction" for "iteration" ever safe?
No. They are said differently (/ˌɪn.təˈɹæk.ʃən/ versus /ˌɪt.əˈɹeɪ.ʃən/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "interaction" or "iteration"?
"interaction" is the more common of the two: it sits at frequency rank #4,387 in our English list, against #17,395 for "iteration". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "interaction" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "iteration" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #421,389 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "interaction" and "iteration" also get mixed up with nearby pairs, the highest-scored neighbour is "ideation vs iteration". 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 #421,389 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