RuavsruinTell them apart

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

Which to use

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

#49,605
“Rua” frequency rank
#4,265
“ruin” frequency rank
53870
confusion score

Side-by-Side Comparison

Feature Rua ruin
Definition A surname. The remains of a destroyed or dilapidated construction, such as a house or castle.

Letter map: Rua vs ruin

Shared letters muted; letters that set Rua and ruin apart highlighted. Shared run: 2. Rua runs 3 letters (CVV) against ruin's 4 (CVVC) - the length gap alone is often enough to separate them once you know to check it.

3 ch
Rua
4 ch
ruin

Role in the sentence - Rua and ruin

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: Rua is aname and ruinanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 53870, derived from the frequency rank of both members and their visual similarity.

Rua is recorded at frequency rank #49,605, classified as aname. ruin is at rank #4,265, tagged as anoun, pronounced /ˈɹuː.ɪn/.

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 53870, this pair ranks #145,518 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of Rua vs ruin

Shared letters: ru. Private to "Rua": a. Private to "ruin": in.

"Rua" · 3 letters · shape CVV  ·  "ruin" · 4 letters · shape CVVC

Known mistypes of this pair

  • ruin ← riun · rruin · ruinn · runi · urin

Frequently Asked Questions

Is swapping "Rua" for "ruin" ever safe?
No - they are not even the same part of speech. "Rua" is a name and "ruin" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "Rua" vs "ruin" - which ranks higher?
"ruin" is the more common of the two: it sits at frequency rank #4,265 in our English list, against #49,605 for "Rua". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Done with this confusable. These links stay specific to "Rua" and "ruin".

  • Full dictionary entry for "Rua" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ruin" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #145,518 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "Rua" and "ruin" also get mixed up with nearby pairs, the highest-scored neighbour is "Rua vs Ruhr". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #145,518 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list