ipsvsisoWhat's the difference?

Quick tell: ips is a symbol, iso is a noun, so they fill different roles in a sentence.

Which to use

“ips” is a symbol and “iso” is a noun - they look or sound alike but fill different roles in a sentence.

#38,871
“ips” frequency rank
#12,181
“iso” frequency rank
51052
confusion score

Side-by-Side Comparison

Feature ips iso
Definition Unité de mesure de la fréquence d’échantillonnage d’un film : nombre d’images qui défilent par seconde. Plan isométrique.

Where the eye mixes ips and iso

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

3 ch
ips
3 ch
iso

Visual trap between ips and iso

These two trip readers on the page rather than in the ear: ips is \i.pe.ɛs\ while iso is \i.zo\. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (symbol vs noun), which is usually the fastest check. Our composite confusion score for this pair is 51052, derived from the frequency rank of both members and their visual similarity.

ips is recorded at frequency rank #38,871, classified as asymbol, pronounced \i.pe.ɛs\. iso is at rank #12,181, tagged as anoun, pronounced \i.zo\.

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 51052, this pair ranks #157,960 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of ips vs iso

Shared letters: is. Private to "ips": p. Private to "iso": o.

"ips" · 3 letters · shape VCC  ·  "iso" · 3 letters · shape VCV

Frequently Asked Questions

Is swapping "ips" for "iso" ever safe?
No - they are not even the same part of speech. "ips" is a symbol and "iso" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "ips" vs "iso" - which ranks higher?
"iso" is the more common of the two: it sits at frequency rank #12,181 in our French list, against #38,871 for "ips". 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 "ips" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "iso" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #157,960 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "ips" and "iso" also get mixed up with nearby pairs, the highest-scored neighbour is "ips vs isi". Nearby pair

Confusion rank #157,960 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