cramvsCROWhich spelling fits?

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

Which to use

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

#24,128
“cram” frequency rank
#33,596
“CRO” frequency rank
57724
confusion score

Side-by-Side Comparison

Feature cram CRO
Definition To press, force, or drive, particularly in filling, or in thrusting one thing into another; to stuff; to fill to superfluity. Initialism of Cathode-Ray Oscilloscope.

Letter map: cram vs CRO

Shared letters muted; letters that set cram and CRO apart highlighted. Shared run: 2.

4 ch
cram
3 ch
CRO

Grammar separator: cram vs CRO

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: cram is averb and CROanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 57724, derived from the frequency rank of both members and their visual similarity.

cram is recorded at frequency rank #24,128, classified as averb, pronounced /kɹæm/. CRO is at rank #33,596, tagged as anoun.

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 57724, this pair ranks #117,462 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of cram vs CRO

Shared letters: cr. Private to "cram": am. Private to "CRO": o.

"cram" · 4 letters · shape CCVC  ·  "CRO" · 3 letters · shape CCV

Known mistypes of this pair

  • cramcarm · ccram · cramm · crma · crram · rcam

Frequently Asked Questions

Can "cram" and "CRO" be used interchangeably?
No - they are not even the same part of speech. "cram" is a verb and "CRO" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "cram" vs "CRO" - which ranks higher?
"cram" is the more common of the two: it sits at frequency rank #24,128 in our English list, against #33,596 for "CRO". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Done with this confusable. These links stay specific to "cram" and "CRO".

  • Full dictionary entry for "cram" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "CRO" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #117,462 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "cram" and "CRO" also get mixed up with nearby pairs, the highest-scored neighbour is "CRO vs Croat". 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 #117,462 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