ESAvsethTell them apart

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

Which to use

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

#20,108
“ESA” frequency rank
#22,077
“eth” frequency rank
42185
confusion score

Side-by-Side Comparison

Feature ESA eth
Definition Initialism of European Space Agency. A letter (capital Ð, small ð) introduced into Old English to represent its dental fricative, then not distinguished from the letter thorn, no longer used in English but still in modern use in Icelandic, the IPA and other phonetic alphabets to represent the voiced dental fricative "th" sound as in the English word then. The letter is also used in Faroese, but is generally silent in that language.

Letter map: ESA vs eth

Shared letters muted; letters that set ESA and eth apart highlighted. Shared run: 1.

3 ch
ESA
3 ch
eth

Part-of-speech tell for ESA / eth

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ESA is aname and ethanoun. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 42185, derived from the frequency rank of both members and their visual similarity.

ESA is recorded at frequency rank #20,108, classified as aname. eth is at rank #22,077, tagged as anoun, pronounced /ɛð/.

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 42185, this pair ranks #251,549 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of ESA vs eth

Shared letters: e. Private to "ESA": as. Private to "eth": ht.

"ESA" · 3 letters · shape VCV  ·  "eth" · 3 letters · shape VCC

Frequently Asked Questions

Do "ESA" and "eth" mean the same thing in a sentence?
No - they are not even the same part of speech. "ESA" is a name and "eth" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "ESA" or "eth" show up more?
"ESA" is the more common of the two: it sits at frequency rank #20,108 in our English list, against #22,077 for "eth". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Done with this confusable. These links stay specific to "ESA" and "eth".

  • Full dictionary entry for "ESA" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "eth" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #251,549 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "ESA" and "eth" also get mixed up with nearby pairs, the highest-scored neighbour is "Eri vs eth". Nearby pair

Confusion rank #251,549 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