RavsroiWhat's the difference?

Quick tell: Ra is a name, roi is a noun, so they fill different roles in a sentence.

Which to use

“Ra” is a name and “roi” is a noun - they look or sound alike but fill different roles in a sentence.

#11,648
“Ra” frequency rank
#547
“roi” frequency rank
12195
confusion score

Side-by-Side Comparison

Feature Ra roi
Definition Autre transcription de Rê (dieu Soleil de la mythologie égyptienne). Titre porté par celui qui règne sur un peuple, un État, en particulier un État monarchique, et qui tient sa fonction de l’hérédité ou de l’élection ; celui qui est à la tête d’un royaume.

Where the eye mixes Ra and roi

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

2 ch
Ra
3 ch
roi

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: Ra is \ʁa\ while roi is \ʁwa\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (name vs noun), which is usually the fastest check. Our composite confusion score for this pair is 12195, derived from the frequency rank of both members and their visual similarity.

Ra is recorded at frequency rank #11,648, classified as aname, pronounced \ʁa\. roi is at rank #547, tagged as anoun, pronounced \ʁwa\.

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 12195, this pair ranks #406,217 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of Ra vs roi

Shared letters: r. Private to "Ra": a. Private to "roi": io.

"Ra" · 2 letters · shape CV  ·  "roi" · 3 letters · shape CVV

Frequently Asked Questions

Can "Ra" and "roi" be used interchangeably?
No - they are not even the same part of speech. "Ra" is a name and "roi" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "Ra" or "roi"?
"roi" is the more common of the two: it sits at frequency rank #547 in our French list, against #11,648 for "Ra". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

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

Source: FrequencyWords open word-frequency list