ievsiecWhat's the difference?

Quick tell: ie is a noun, iec is a verb, so they fill different roles in a sentence.

Which to use

“ie” is a noun and “iec” is a verb - they look or sound alike but fill different roles in a sentence.

#7,068
“ie” frequency rank
#48,589
“iec” frequency rank
55657
confusion score

Side-by-Side Comparison

Feature ie iec
Definition Neuvième lettre de l’alphabet cyrillique, е. Deuxième personne du pluriel du présent du verbe ié.

Where the eye mixes ie and iec

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

2 ch
ie
3 ch
iec

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: ie is \je\ while iec is \iˈɛʃ\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 extra letter(s) - “ie” sits inside “iec”, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 55657, derived from the frequency rank of both members and their visual similarity.

ie is recorded at frequency rank #7,068, classified as anoun, pronounced \je\. iec is at rank #48,589, tagged as averb, pronounced \iˈɛʃ\.

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 55657, this pair ranks #126,077 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of ie vs iec

Shared letters: ei. Private to "ie": -. Private to "iec": c.

"ie" · 2 letters · shape VV  ·  "iec" · 3 letters · shape VVC

Frequently Asked Questions

Can "ie" and "iec" be used interchangeably?
No - they are not even the same part of speech. "ie" is a noun and "iec" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "ie" or "iec"?
"ie" is the more common of the two: it sits at frequency rank #7,068 in our French list, against #48,589 for "iec". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

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

Source: FrequencyWords open word-frequency list