ThivstomTell them apart

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

Which to use

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

#23,700
“Thi” frequency rank
#1,582
“tom” frequency rank
25282
confusion score

Side-by-Side Comparison

Feature Thi tom
Definition A surname from Vietnamese. The male of the domesticated cat, especially if not neutered.

Letter map: Thi vs tom

Shared letters muted; letters that set Thi and tom apart highlighted. Shared run: 1.

3 ch
Thi
3 ch
tom

Role in the sentence - Thi and tom

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: Thi is aname and tomanoun. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 25282, derived from the frequency rank of both members and their visual similarity.

Thi is recorded at frequency rank #23,700, classified as aname. tom is at rank #1,582, tagged as anoun, pronounced /tɒm/.

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 25282, this pair ranks #395,493 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of Thi vs tom

Shared letters: t. Private to "Thi": hi. Private to "tom": mo.

"Thi" · 3 letters · shape CCV  ·  "tom" · 3 letters · shape CVC

Frequently Asked Questions

Is swapping "Thi" for "tom" ever safe?
No - they are not even the same part of speech. "Thi" is a name and "tom" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "Thi" or "tom" show up more?
"tom" is the more common of the two: it sits at frequency rank #1,582 in our English list, against #23,700 for "Thi". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

Pair "Thi" vs "tom" is on the table, pick a follow-up below.

  • Full dictionary entry for "Thi" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "tom" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #395,493 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "Thi" and "tom" also get mixed up with nearby pairs, the highest-scored neighbour is "Taf vs Thi". Nearby pair

Confusion rank #395,493 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