Which to use
“pack” is a noun and “Planck” is a name - they look or sound alike but fill different roles in a sentence.
- #2,224
- “pack” frequency rank
- #28,332
- “Planck” frequency rank
- 30556
- confusion score
Side-by-Side Comparison
| Feature | pack | Planck |
|---|---|---|
| Definition | A bundle made up and prepared to be carried; especially, a bundle to be carried on the back, but also a load for an animal, a bale. | A surname from German. |
Where the eye mixes pack and Planck
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.
Visual trap between pack and Planck
These two trip readers on the page rather than in the ear: pack is /pæk/ while Planck is /plɑ(ː)ŋk/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (noun vs name), which is usually the fastest check. Our composite confusion score for this pair is 30556, derived from the frequency rank of both members and their visual similarity.
pack is recorded at frequency rank #2,224, classified as anoun, pronounced /pæk/. Planck is at rank #28,332, tagged as aname, pronounced /plɑ(ː)ŋk/.
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 30556, this pair ranks #353,591 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of pack vs Planck
Shared letters: ackp. Private to "pack": -. Private to "Planck": ln.
"pack" · 4 letters · shape CVCC · "Planck" · 6 letters · shape CCVCCC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "pack" for "Planck" ever safe?
Frequency check: "pack" vs "Planck" - which ranks higher?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "pack" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "Planck" - compare definitions side by side with the headword page. Word entry
- This pair ranks #353,591 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "pack" and "Planck" also get mixed up with nearby pairs, the highest-scored neighbour is "Planck vs plano". Nearby pair
- Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes
Confusion rank #353,591 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.