consvsCSSWhich spelling fits?

Which to use

“cons” and “CSS” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#10,183
“cons” frequency rank
#16,676
“CSS” frequency rank
26859
confusion score

Side-by-Side Comparison

Feature cons CSS
Definition A data structure in Lisp that is a pair of pointers, car and cdr, used mainly for lists. Initialism of change segment status, a GDS code used on older types of airline keyboards.

Where the eye mixes cons and CSS

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
cons
3 ch
CSS

Look-alike desk: cons vs CSS

A purely visual mix-up. cons (/ˈkɑnz/) and CSS (/siː ɛs ˈɛs/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 26859, derived from the frequency rank of both members and their visual similarity.

cons is recorded at frequency rank #10,183, classified as anoun, pronounced /ˈkɑnz/. CSS is at rank #16,676, tagged as anoun, pronounced /siː ɛs ˈɛs/.

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 26859, this pair ranks #383,477 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of cons vs CSS

Shared letters: cs. Private to "cons": no. Private to "CSS": -.

"cons" · 4 letters · shape CVCC  ·  "CSS" · 3 letters · shape CCC

Known mistypes of this pair

  • consccons · cnos · conns · conss · cosn · ocns

Frequently Asked Questions

Can "cons" and "CSS" be used interchangeably?
No. They are said differently (/ˈkɑnz/ versus /siː ɛs ˈɛs/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "cons" vs "CSS" - which ranks higher?
"cons" is the more common of the two: it sits at frequency rank #10,183 in our English list, against #16,676 for "CSS". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "cons" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "CSS" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #383,477 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "cons" and "CSS" also get mixed up with nearby pairs, the highest-scored neighbour is "CGT vs CSS". 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 #383,477 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