theirvswhichWhat's the difference?

Which to use

“their” and “which” are a confusable German pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#11,131
“their” frequency rank
#12,204
“which” frequency rank
23335
confusion score

Side-by-Side Comparison

Feature their which
Definition ihr welche?

Letter map: their vs which

Shared letters muted; letters that set their and which apart highlighted. Shared run: 2.

5 ch
their
5 ch
which

Spelling & Dictionary Insight

their and which are indexed as a confusable German pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they share most of their letters but differ in 4 positions. Our composite confusion score for this pair is 23335, derived from the frequency rank of both members and their visual similarity.

their is recorded at frequency rank #11,131, classified as apron, pronounced […]. which is at rank #12,204, 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 23335, this pair ranks #1,862,611 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of their vs which

Shared letters: hi. Private to "their": ert. Private to "which": cw.

"their" · 5 letters · shape CCVVC  ·  "which" · 5 letters · shape CCVCC

Known mistypes of this pair

  • theirhteir · tehir · theirr · theri · thheir · thier · ttheir
  • whichhwich · whcih · whhich · whicch · whichh · whihc · wihch · wwhich

Frequently Asked Questions

Can "their" and "which" be used interchangeably?
No. They share most of their letters but differ in 4 positions, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.
Which is more common, "their" or "which"?
"their" is the more common of the two: it sits at frequency rank #11,131 in our German list, against #12,204 for "which". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

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

Source: FrequencyWords open word-frequency list