sivsSJWhat's the difference?

Quick tell: si is a conjunction, SJ is a noun, so they fill different roles in a sentence.

Which to use

“si” is a conjunction and “SJ” is a noun - they look or sound alike but fill different roles in a sentence.

#46
“si” frequency rank
#47,612
“SJ” frequency rank
47658
confusion score

Side-by-Side Comparison

Feature si SJ
Definition Dans le cas où, à condition que, supposé que. Note d’usage : Conjonction qui introduit une condition (suivie d’une conséquence) ou une supposition qui peut être supprimée en utilisant un conditionnel. Société de Jésus.

Letter map: si vs SJ

Shared letters muted; letters that set si and SJ apart highlighted. Shared run: 1.

2 ch
si
2 ch
SJ

Spelling & Dictionary Insight

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: si is aconjunction and SJanoun. On the page they differ by a single letter - i in “si” becomes j in “SJ”. Our composite confusion score for this pair is 47658, derived from the frequency rank of both members and their visual similarity.

si is recorded at frequency rank #46, classified as aconj, pronounced \si\. SJ is at rank #47,612, 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 47658, this pair ranks #185,196 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of si vs SJ

Shared letters: s. Private to "si": i. Private to "SJ": j.

"si" · 2 letters · shape CV  ·  "SJ" · 2 letters · shape CC

Frequently Asked Questions

Can "si" and "SJ" be used interchangeably?
No - they are not even the same part of speech. "si" is a conjunction and "SJ" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "si" or "SJ"?
"si" is the more common of the two: it sits at frequency rank #46 in our French list, against #47,612 for "SJ". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

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

Source: FrequencyWords open word-frequency list