organisation vs organization

Which to use

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

#3,897
“organisation” frequency rank: #1,280
“organization” frequency rank: 5177
confusion score

Side-by-Side Comparison

Feature	organisation	organization
Definition	Non-Oxford British English and Australian standard spelling of organization.	The quality of being organized.

Where the eye mixes organisation and organization

Muted = shared; highlighted = the visual trap. They share 11 letters in sequence.

12 ch

organisation

12 ch

organization

Spelling & Dictionary Insight

A purely visual mix-up. organisation (/ˈɔː(ɹ).ɡən.aɪˌzeɪ.ʃən/) and organization (/ˌɔː.ɡə.naɪˈzeɪ.ʃən/) 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 a single letter - s in “organisation” becomes z in “organization”. Our composite confusion score for this pair is 5177, derived from the frequency rank of both members and their visual similarity.

organisation is recorded at frequency rank #3,897, classified as anoun, pronounced /ˈɔː(ɹ).ɡən.aɪˌzeɪ.ʃən/. organization is at rank #1,280, tagged as anoun, pronounced /ˌɔː.ɡə.naɪˈzeɪ.ʃən/.

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 5177, this pair ranks #516,308 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of organisation vs organization

Shared letters: aginort. Private to "organisation": s. Private to "organization": z.

"organisation" · 12 letters · shape VCCVCVCVCVVC · "organization" · 12 letters · shape VCCVCVCVCVVC

Known mistypes of this pair

organisation ← ogranisation · oragnisation · orgainsation · organiastion · organisaiton · organisasion · organisatino · organisationn
organization ← ogranization · oragnization · orgainzation · organiaztion · organizaiton · organizasion · organizatino · organizationn

Frequently Asked Questions

Can "organisation" and "organization" be used interchangeably?

No. They are said differently (/ˈɔː(ɹ).ɡən.aɪˌzeɪ.ʃən/ versus /ˌɔː.ɡə.naɪˈzeɪ.ʃən/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.

Which is more common, "organisation" or "organization"?

"organization" is the more common of the two: it sits at frequency rank #1,280 in our English list, against #3,897 for "organisation". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.