Which to use
“spi” is an adjective and “STM” is a noun - they look or sound alike but fill different roles in a sentence.
- #49,369
- “spi” frequency rank
- #23,698
- “STM” frequency rank
- 73067
- confusion score
Side-by-Side Comparison
| Feature | spi | STM |
|---|---|---|
| Definition | Spirituel (au sens religieux). | Microscopie à effet tunnel. |
Letter map: spi vs STM
Shared letters muted; letters that set spi and STM apart highlighted. Shared run: 1.
Role in the sentence - spi and STM
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: spi is anadjective and STManoun. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 73067, derived from the frequency rank of both members and their visual similarity.
spi is recorded at frequency rank #49,369, classified as anadj, pronounced \spi\. STM is at rank #23,698, tagged as anoun.
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 73067, this pair ranks #41,729 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of spi vs STM
Shared letters: s. Private to "spi": ip. Private to "STM": mt.
"spi" · 3 letters · shape CCV · "STM" · 3 letters · shape CCC
Frequently Asked Questions
Can "spi" and "STM" be used interchangeably?
Frequency check: "spi" vs "STM" - which ranks higher?
After this comparison
Pair "spi" vs "STM" is on the table, pick a follow-up below.
- Full dictionary entry for "spi" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "STM" - compare definitions side by side with the headword page. Word entry
- This pair ranks #41,729 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "spi" and "STM" also get mixed up with nearby pairs, the highest-scored neighbour is "spi vs suu". Nearby pair
Confusion rank #41,729 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.