rex vs rey, What's the Difference?

Which to use

“rex” and “rey” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#13,343
“rex” frequency rank: #492
“rey” frequency rank: 13835
confusion score

Side-by-Side Comparison

Feature	rex	rey
Definition	Rey, monarca.	Monarca soberano de un reino.

Where the eye mixes rex and rey

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

3 ch

rex

3 ch

rey

Look-alike desk: rex vs rey

A purely visual mix-up. rex (/ˈreːks/) and rey ([ˈrej]) 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 a single letter - x in “rex” becomes y in “rey”. Our composite confusion score for this pair is 13835, derived from the frequency rank of both members and their visual similarity.

rex is recorded at frequency rank #13,343, classified as anoun, pronounced /ˈreːks/. rey is at rank #492, tagged as anoun, pronounced [ˈrej].

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 13835, this pair ranks #286,375 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of rex vs rey

Shared letters: er. Private to "rex": x. Private to "rey": y.

"rex" · 3 letters · shape CVC · "rey" · 3 letters · shape CVV

Frequently Asked Questions

Do "rex" and "rey" mean the same thing in a sentence?

No. They are said differently (/ˈreːks/ versus [ˈrej]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.

Which is more common, "rex" or "rey"?

"rey" is the more common of the two: it sits at frequency rank #492 in our Spanish list, against #13,343 for "rex". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Eye-level mix-up between "rex" and "rey" is sorted above. Next: full entries or other pairs that share a letter shape.

Full dictionary entry for "rex" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "rey" - compare definitions side by side with the headword page. Word entry
This pair ranks #286,375 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
"rex" and "rey" also get mixed up with nearby pairs, the highest-scored neighbour is "rema vs rex". Nearby pair

Confusion rank #286,375 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.