Which to use
“observation” is a noun and “their” is a pronoun - they look or sound alike but fill different roles in a sentence.
- #49,936
- “observation” frequency rank
- #11,131
- “their” frequency rank
- 61067
- confusion score
Side-by-Side Comparison
| Feature | observation | their |
|---|---|---|
| Definition | Beobachtung, Observation, Überwachung | ihr |
Letter map: observation vs their
Shared letters muted; letters that set observation and their apart highlighted. Shared run: 2. observation runs 11 letters (VCCVCCVCVVC) against their's 5 (CCVVC) - the length gap alone is often enough to separate them once you know to check it.
Grammar separator: observation vs their
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: observation is anoun and theirapronoun. On the page they differ by 6 letter(s) in length. Our composite confusion score for this pair is 61067, derived from the frequency rank of both members and their visual similarity.
observation is recorded at frequency rank #49,936, classified as anoun, pronounced […]. their is at rank #11,131, tagged as apron, pronounced […].
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 61067, this pair ranks #763,520 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of observation vs their
Shared letters: eirt. Private to "observation": abnosv. Private to "their": h.
"observation" · 11 letters · shape VCCVCCVCVVC · "their" · 5 letters · shape CCVVC
Known mistypes of this pair
- observation ← boservation · obbservation · obesrvation · obseravtion · obserrvation · observaiton · observatino · observationn
- their ← hteir · tehir · theirr · theri · thheir · thier · ttheir
Frequently Asked Questions
Can "observation" and "their" be used interchangeably?
Frequency check: "observation" vs "their" - which ranks higher?
What to do next
Done with this confusable. These links stay specific to "observation" and "their".
- Full dictionary entry for "observation" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "their" - compare definitions side by side with the headword page. Word entry
- This pair ranks #763,520 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
- "observation" and "their" also get mixed up with nearby pairs, the highest-scored neighbour is "observation vs puzzles". 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 #763,520 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.