ThulevsthumbWhat's the difference?

Quick tell: Thule is a name, thumb is a noun, so they fill different roles in a sentence.

Which to use

“Thule” is a name and “thumb” is a noun - they look or sound alike but fill different roles in a sentence.

#47,381
“Thule” frequency rank
#7,071
“thumb” frequency rank
54452
confusion score

Side-by-Side Comparison

Feature Thule thumb
Definition The semi-legendary island of classical antiquity considered to represent the northernmost location in the inhabited world (the Ecumene). The shortest and thickest digit of the hand that for humans has the most mobility and can be made to oppose (moved to touch) all of the other fingers.

Where the eye mixes Thule and thumb

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

5 ch
Thule
5 ch
thumb

Look-alike desk: Thule vs thumb

These two trip readers on the page rather than in the ear: Thule is /ˈθjuːliː/ while thumb is /θʌm/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (name vs noun), which is usually the fastest check. Our composite confusion score for this pair is 54452, derived from the frequency rank of both members and their visual similarity.

Thule is recorded at frequency rank #47,381, classified as aname, pronounced /ˈθjuːliː/. thumb is at rank #7,071, tagged as anoun, pronounced /θʌm/.

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 54452, this pair ranks #141,007 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of Thule vs thumb

Shared letters: htu. Private to "Thule": el. Private to "thumb": bm.

"Thule" · 5 letters · shape CCVCV  ·  "thumb" · 5 letters · shape CCVCC

Known mistypes of this pair

  • Thulehtule · thhule · thlue · thuel · thulle · tthule · tuhle
  • thumbhtumb · thhumb · thmub · thubm · thumbb · thummb · tthumb · tuhmb

Frequently Asked Questions

Can "Thule" and "thumb" be used interchangeably?
No - they are not even the same part of speech. "Thule" is a name and "thumb" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "Thule" or "thumb"?
"thumb" is the more common of the two: it sits at frequency rank #7,071 in our English list, against #47,381 for "Thule". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "Thule" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "thumb" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #141,007 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "Thule" and "thumb" also get mixed up with nearby pairs, the highest-scored neighbour is "Thule vs Thun". 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 #141,007 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list