kvsKuWhat's the difference?

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

Which to use

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

#1,310
“k” frequency rank
#14,350
“Ku” frequency rank
15660
confusion score

Side-by-Side Comparison

Feature k Ku
Definition The eleventh letter of the English alphabet, called kay and written in the Latin script. A surname from Korean.

Letter map: k vs Ku

Shared letters muted; letters that set k and Ku apart highlighted. Shared run: 1.

1 ch
k
2 ch
Ku

Spelling & Dictionary Insight

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: k is acharacter and Kuaname. On the page they differ by 1 extra letter(s) - “k” sits inside “Ku”. Our composite confusion score for this pair is 15660, derived from the frequency rank of both members and their visual similarity.

k is recorded at frequency rank #1,310, classified as acharacter, pronounced /keɪ/. Ku is at rank #14,350, 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 15660, this pair ranks #462,602 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of k vs Ku

Shared letters: k. Private to "k": -. Private to "Ku": u.

"k" · 1 letters · shape C  ·  "Ku" · 2 letters · shape CV

Frequently Asked Questions

Can "k" and "Ku" be used interchangeably?
No - they are not even the same part of speech. "k" is a character and "Ku" a name, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "k" or "Ku"?
"k" is the more common of the two: it sits at frequency rank #1,310 in our English list, against #14,350 for "Ku". 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