o's vs ob, What's the Difference?

Which to use

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

#30,902
“o's” frequency rank: #16,547
“ob” frequency rank: 47449
confusion score

Side-by-Side Comparison

Feature	o's	ob
Definition	plural of the letter o	a halfpenny

Where the eye mixes o's and ob

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch

o's

2 ch

Spelling & Dictionary Insight

A purely visual mix-up. o's (/əʊz/) and ob (/ɒb/) 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 1 letter(s) in length. Our composite confusion score for this pair is 47449, derived from the frequency rank of both members and their visual similarity.

o's is recorded at frequency rank #30,902, classified as anoun, pronounced /əʊz/. ob is at rank #16,547, tagged as anoun, pronounced /ɒb/.

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 47449, this pair ranks #202,358 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of o's vs ob

Shared letters: o. Private to "o's": s. Private to "ob": b.

"o's" · 2 letters · shape VC · "ob" · 2 letters · shape VC

Frequently Asked Questions

Can "o's" and "ob" be used interchangeably?

No. They are said differently (/əʊz/ versus /ɒb/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.

Which is more common, "o's" or "ob"?

"ob" is the more common of the two: it sits at frequency rank #16,547 in our English list, against #30,902 for "o's". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.