casevscloseWhat's the difference?

Quick tell: case is a noun, close is a verb, so they fill different roles in a sentence.

Which to use

“case” is a noun and “close” is a verb - they look or sound alike but fill different roles in a sentence.

#255
“case” frequency rank
#431
“close” frequency rank
686
confusion score

Side-by-Side Comparison

Feature case close
Definition An actual event, situation, or fact. To remove or block an opening, gap or passage through.

Where the eye mixes case and close

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

4 ch
case
5 ch
close

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: case is /keɪs/ while close is /kləʊz/. 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 (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 686, derived from the frequency rank of both members and their visual similarity.

case is recorded at frequency rank #255, classified as anoun, pronounced /keɪs/. close is at rank #431, tagged as averb, pronounced /kləʊz/.

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 686, this pair ranks #528,979 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of case vs close

Shared letters: ces. Private to "case": a. Private to "close": lo.

"case" · 4 letters · shape CVCV  ·  "close" · 5 letters · shape CCVCV

Known mistypes of this pair

  • caseacse · caes · casse · ccase · csae
  • closecclose · cllose · cloes · closse · clsoe · colse · lcose

Frequently Asked Questions

Can "case" and "close" be used interchangeably?
No - they are not even the same part of speech. "case" is a noun and "close" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "case" or "close"?
"case" is the more common of the two: it sits at frequency rank #255 in our English list, against #431 for "close". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

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

Source: FrequencyWords open word-frequency list