tauvstemWhich spelling fits?

Quick tell: tau is a noun, tem is a verb, so they fill different roles in a sentence.

Which to use

“tau” is a noun and “tem” is a verb - they look or sound alike but fill different roles in a sentence.

#32,397
“tau” frequency rank
#33
“tem” frequency rank
32430
confusion score

Side-by-Side Comparison

Feature tau tem
Definition nome da décima nona letra do alfabeto grego (Τ/τ) terceira pessoa do singular do presente do indicativo do verbo ter

Letter map: tau vs tem

Shared letters muted; letters that set tau and tem apart highlighted. Shared run: 1.

3 ch
tau
3 ch
tem

Part-of-speech tell for tau / tem

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: tau is anoun and temaverb. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 32430, derived from the frequency rank of both members and their visual similarity.

tau is recorded at frequency rank #32,397, classified as anoun, pronounced /taw/. tem is at rank #33, tagged as averb.

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 32430, this pair ranks #35,392 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of tau vs tem

Shared letters: t. Private to "tau": au. Private to "tem": em.

"tau" · 3 letters · shape CVV  ·  "tem" · 3 letters · shape CVC

Frequently Asked Questions

Do "tau" and "tem" mean the same thing in a sentence?
No - they are not even the same part of speech. "tau" is a noun and "tem" a verb, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "tau" or "tem" show up more?
"tem" is the more common of the two: it sits at frequency rank #33 in our Portuguese list, against #32,397 for "tau". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Pair "tau" vs "tem" is on the table, pick a follow-up below.

  • Full dictionary entry for "tau" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "tem" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #35,392 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "tau" and "tem" also get mixed up with nearby pairs, the highest-scored neighbour is "tau vs til". Nearby pair

Confusion rank #35,392 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list