rvsRIWhat's the difference?

Quick tell: r is a character, RI is a name, so they fill different roles in a sentence.

Which to use

“r” is a character and “RI” is a name - they look or sound alike but fill different roles in a sentence.

#449
“r” frequency rank
#11,453
“RI” frequency rank
11902
confusion score

Side-by-Side Comparison

Feature r RI
Definition The eighteenth letter of the English alphabet, called ar and written in the Latin script. Initialism of Rhode Island: a state of the United States.

Letter map: r vs RI

Shared letters muted; letters that set r and RI apart highlighted. Shared run: 1.

1 ch
r
2 ch
RI

Spelling & Dictionary Insight

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: r is acharacter and RIaname. On the page they differ by 1 extra letter(s) - “r” sits inside “RI”. Our composite confusion score for this pair is 11902, derived from the frequency rank of both members and their visual similarity.

r is recorded at frequency rank #449, classified as acharacter, pronounced /ɑː(ɹ)/. RI is at rank #11,453, tagged as aname.

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 11902, this pair ranks #484,488 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of r vs RI

Shared letters: r. Private to "r": -. Private to "RI": i.

"r" · 1 letters · shape C  ·  "RI" · 2 letters · shape CV

Frequently Asked Questions

Can "r" and "RI" be used interchangeably?
No - they are not even the same part of speech. "r" is a character and "RI" a name, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "r" or "RI"?
"r" is the more common of the two: it sits at frequency rank #449 in our English list, against #11,453 for "RI". 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