tendonvstensionWhich spelling fits?

Which to use

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

#19,483
“tendon” frequency rank
#4,987
“tension” frequency rank
24470
confusion score

Side-by-Side Comparison

Feature tendon tension
Definition A tough band of flexible but inelastic fibrous collagen tissue that connects a muscle with its bony attachment and transmits the force which the muscle exerts. The condition of being held in a state between two or more forces, which are acting in opposition to each other.

Where the eye mixes tendon and tension

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. tendon runs 6 letters (CVCCVC) against tension's 7 (CVCCVVC) - the length gap alone is often enough to separate them once you know to check it.

6 ch
tendon
7 ch
tension

Why the eye confuses tendon with tension

A purely visual mix-up. tendon (/ˈtɛn.dən/) and tension (/ˈtɛnʃən/) 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 24470, derived from the frequency rank of both members and their visual similarity.

tendon is recorded at frequency rank #19,483, classified as anoun, pronounced /ˈtɛn.dən/. tension is at rank #4,987, tagged as anoun, pronounced /ˈtɛnʃən/.

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 24470, this pair ranks #401,709 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of tendon vs tension

Shared letters: enot. Private to "tendon": d. Private to "tension": is.

"tendon" · 6 letters · shape CVCCVC  ·  "tension" · 7 letters · shape CVCCVVC

Known mistypes of this pair

  • tendon ← etndon · tednon · tenddon · tendno · tendonn · tenndon · tenodn · tnedon
  • tension ← etnsion · tenison · tennsion · tensino · tensionn · tensoin · tenssion · tention

Frequently Asked Questions

Can "tendon" and "tension" be used interchangeably?
No. They are said differently (/ˈtɛn.dən/ versus /ˈtɛnʃən/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "tendon" or "tension"?
"tension" is the more common of the two: it sits at frequency rank #4,987 in our English list, against #19,483 for "tendon". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Eye-level mix-up between "tendon" and "tension" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "tendon" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "tension" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #401,709 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "tendon" and "tension" also get mixed up with nearby pairs, the highest-scored neighbour is "tendon vs Teton". 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 #401,709 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