Which to use
“robot” and “roost” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #4,793
- “robot” frequency rank
- #29,070
- “roost” frequency rank
- 33863
- confusion score
Side-by-Side Comparison
| Feature | robot | roost |
|---|---|---|
| Definition | A system of serfdom used in Central Europe, under which a tenant's rent was paid in forced labour. | The place where a bird sleeps (usually its nest or a branch). |
Where the eye mixes robot and roost
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.
Look-alike desk: robot vs roost
A purely visual mix-up. robot (/ˈɹəʊ.bɒt/) and roost (/ɹuːst/) 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 33863, derived from the frequency rank of both members and their visual similarity.
robot is recorded at frequency rank #4,793, classified as anoun, pronounced /ˈɹəʊ.bɒt/. roost is at rank #29,070, tagged as anoun, pronounced /ɹuːst/.
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 33863, this pair ranks #325,744 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of robot vs roost
Shared letters: ort. Private to "robot": b. Private to "roost": s.
"robot" · 5 letters · shape CVCVC · "roost" · 5 letters · shape CVVCC
Known mistypes of this pair
Frequently Asked Questions
Can "robot" and "roost" be used interchangeably?
Frequency check: "robot" vs "roost" - which ranks higher?
What to do next
Eye-level mix-up between "robot" and "roost" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "robot" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "roost" - compare definitions side by side with the headword page. Word entry
- This pair ranks #325,744 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "robot" and "roost" also get mixed up with nearby pairs, the highest-scored neighbour is "rooks vs roost". 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 #325,744 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.