purposevstheirWhat's the difference?

Quick tell: purpose is a noun, their is a pronoun, so they fill different roles in a sentence.

Which to use

“purpose” is a noun and “their” is a pronoun - they look or sound alike but fill different roles in a sentence.

#49,985
“purpose” frequency rank
#11,131
“their” frequency rank
61116
confusion score

Side-by-Side Comparison

Feature purpose their
Definition Absicht, Ziel, Zweck, Vorsatz ihr

Where the spellings diverge

Shared letters are muted; the letters that actually set purpose and their apart are highlighted. They share 1 letter in sequence, which is exactly why the eye skips the difference.

7 ch
purpose
5 ch
their

Spelling & Dictionary Insight

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: purpose is anoun and theirapronoun. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 61116, derived from the frequency rank of both members and their visual similarity.

purpose is recorded at frequency rank #49,985, 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 61116, this pair ranks #761,718 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of purpose vs their

Shared letters: er. Private to "purpose": opsu. Private to "their": hit.

"purpose" · 7 letters · shape CVCCVCV  ·  "their" · 5 letters · shape CCVVC

Known mistypes of this pair

  • purposeppurpose · prupose · puprose · puropse · purpoes · purposse · purppose · purpsoe
  • theirhteir · tehir · theirr · theri · thheir · thier · ttheir

Frequency comparison

purpose#49,985
their#11,131

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "purpose" and "their" be used interchangeably?
No - they are not even the same part of speech. "purpose" is a noun and "their" a pronoun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "purpose" or "their"?
"their" is the more common of the two: it sits at frequency rank #11,131 in our German list, against #49,985 for "purpose". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering purpose vs their

The fastest way to pick the right one every time.

  • Check the role first: if you need a noun, it's “purpose”; for a pronoun, it's “their”.
  • See each word in full, definition, IPA, etymology and its other confusables. Full “purpose” entry
  • Browse more pairs most likely to be confused. Most confusable

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list