hy vs Hz, What's the Difference?

Which to use

“hy” is a pronoun and “Hz” is a symbol - they look or sound alike but fill different roles in a sentence.

#47,944
“hy” frequency rank: #35,085
“Hz” frequency rank: 83029
confusion score

Side-by-Side Comparison

Feature	hy	Hz
Definition	Pronom personnel sujet masculin de la troisième personne du singulier : il.	Symbole du hertz, unité de mesure de la fréquence dans le Système international.

Letter map: hy vs Hz

Shared letters muted; letters that set hy and Hz apart highlighted. Shared run: 1. hy (CV) and Hz (CC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

2 ch

Grammar separator: hy vs Hz

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: hy is apronoun and Hzasymbol. On the page they differ by a single letter - y in “hy” becomes z in “Hz”. Our composite confusion score for this pair is 83029, derived from the frequency rank of both members and their visual similarity.

hy is recorded at frequency rank #47,944, classified as apron, pronounced \ɦəi\. Hz is at rank #35,085, tagged as asymbol.

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 83029, this pair ranks #15,593 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of hy vs Hz

Shared letters: h. Private to "hy": y. Private to "Hz": z.

"hy" · 2 letters · shape CV · "Hz" · 2 letters · shape CC

Frequently Asked Questions

Do "hy" and "Hz" mean the same thing in a sentence?

No - they are not even the same part of speech. "hy" is a pronoun and "Hz" a symbol, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "hy" or "Hz"?

"Hz" is the more common of the two: it sits at frequency rank #35,085 in our French list, against #47,944 for "hy". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Done with this confusable. These links stay specific to "hy" and "Hz".

Full dictionary entry for "hy" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "Hz" - compare definitions side by side with the headword page. Word entry
This pair ranks #15,593 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
"hy" and "Hz" also get mixed up with nearby pairs, the highest-scored neighbour is "hae vs hy". Nearby pair

Confusion rank #15,593 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.