STMvssumoConfusable pair

Which to use

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

#38,181
“STM” frequency rank
#26,985
“sumo” frequency rank
65166
confusion score

Side-by-Side Comparison

Feature STM sumo
Definition Initialism of scanning tunneling microscope. A stylised Japanese form of wrestling in which a wrestler loses if he is forced from the ring, or if any part of his body except the soles of his feet touches the ground.

Letter map: STM vs sumo

Shared letters muted; letters that set STM and sumo apart highlighted. Shared run: 2.

3 ch
STM
4 ch
sumo

Pair insight - STM / sumo

STM and sumo are indexed as a confusable English pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 65166, derived from the frequency rank of both members and their visual similarity.

STM is recorded at frequency rank #38,181, classified as anoun. sumo is at rank #26,985, tagged as anoun, pronounced /ˈsuːməʊ/.

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 65166, this pair ranks #74,107 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of STM vs sumo

Shared letters: ms. Private to "STM": t. Private to "sumo": ou.

"STM" · 3 letters · shape CCC  ·  "sumo" · 4 letters · shape CVCV

Known mistypes of this pair

  • sumosmuo · ssumo · summo · suom · usmo

Frequently Asked Questions

Do "STM" and "sumo" mean the same thing in a sentence?
No. They differ by 1 letter(s) in length, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.
Frequency check: "STM" vs "sumo" - which ranks higher?
"sumo" is the more common of the two: it sits at frequency rank #26,985 in our English list, against #38,181 for "STM". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Done with this confusable. These links stay specific to "STM" and "sumo".

  • Full dictionary entry for "STM" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "sumo" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #74,107 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "STM" and "sumo" also get mixed up with nearby pairs, the highest-scored neighbour is "Sif vs STM". 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 #74,107 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