um vs und, What's the Difference?

Which to use

“um” is an article and “und” is a conjunction - they look or sound alike but fill different roles in a sentence.

#12
“um” frequency rank: #29,551
“und” frequency rank: 29563
confusion score

Side-by-Side Comparison

Feature	um	und
Definition	qualquer	(conjunção coordenativa) e.

Where the eye mixes um and und

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

2 ch

3 ch

und

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: um is /ũw/ while und is /ʊnt/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (article vs conjunction), which is usually the fastest check. Our composite confusion score for this pair is 29563, derived from the frequency rank of both members and their visual similarity.

um is recorded at frequency rank #12, classified as anarticle, pronounced /ũw/. und is at rank #29,551, tagged as aconj, pronounced /ʊnt/.

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 29563, this pair ranks #39,021 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of um vs und

Shared letters: u. Private to "um": m. Private to "und": dn.

"um" · 2 letters · shape VC · "und" · 3 letters · shape VCC

Frequently Asked Questions

Can "um" and "und" be used interchangeably?

No - they are not even the same part of speech. "um" is an article and "und" a conjunction, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "um" or "und"?

"um" is the more common of the two: it sits at frequency rank #12 in our Portuguese list, against #29,551 for "und". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

You've compared "um" and "und". Here's where to go from here.

Full dictionary entry for "um" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "und" - compare definitions side by side with the headword page. Word entry
This pair ranks #39,021 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"um" and "und" also get mixed up with nearby pairs, the highest-scored neighbour is "ú vs und". Nearby pair

PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.