racismvsradiumWhat's the difference?

Which to use

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

#4,703
“racism” frequency rank
#37,184
“radium” frequency rank
41887
confusion score

Side-by-Side Comparison

Feature racism radium
Definition The belief that there are distinct human races with inherent differences which determine their abilities, and generally that some are superior and others inferior. The chemical element (symbol Ra) with an atomic number of 88. It is a soft, shiny and silvery radioactive alkaline earth metal.

Where the eye mixes racism and radium

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. racism (CVCVCC) and radium (CVCVVC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

6 ch
racism
6 ch
radium

Look-alike desk: racism vs radium

A purely visual mix-up. racism (/ˈɹeɪsɪzm̩/) and radium (/ˈɹeɪ.dɪ.əm/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 41887, derived from the frequency rank of both members and their visual similarity.

racism is recorded at frequency rank #4,703, classified as anoun, pronounced /ˈɹeɪsɪzm̩/. radium is at rank #37,184, tagged as anoun, pronounced /ˈɹeɪ.dɪ.əm/.

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 41887, this pair ranks #254,229 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of racism vs radium

Shared letters: aimr. Private to "racism": cs. Private to "radium": du.

"racism" · 6 letters · shape CVCVCC  ·  "radium" · 6 letters · shape CVCVVC

Known mistypes of this pair

  • racism ← arcism · raccism · racims · racismm · racissm · racsim · raicsm · rcaism
  • radium ← ardium · raddium · radimu · radiumm · raduim · raidum · rdaium · rradium

Frequently Asked Questions

Can "racism" and "radium" be used interchangeably?
No. They are said differently (/ˈɹeɪsɪzm̩/ versus /ˈɹeɪ.dɪ.əm/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "racism" or "radium"?
"racism" is the more common of the two: it sits at frequency rank #4,703 in our English list, against #37,184 for "radium". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "racism" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "radium" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #254,229 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "racism" and "radium" also get mixed up with nearby pairs, the highest-scored neighbour is "radium vs Rahim". 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 #254,229 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