southvssthWhat's the difference?

Quick tell: south is a noun, sth is a pronoun, so they fill different roles in a sentence.

Which to use

“south” is a noun and “sth” is a pronoun - they look or sound alike but fill different roles in a sentence.

#392
“south” frequency rank
#40,035
“sth” frequency rank
40427
confusion score

Side-by-Side Comparison

Feature south sth
Definition The direction towards the pole to the right-hand side of someone facing east, specifically 180°, or (on another celestial object) the direction towards the pole lying on the southern side of the invariable plane. Abbreviation of something.

Letter map: south vs sth

Shared letters muted; letters that set south and sth apart highlighted. Shared run: 3.

5 ch
south
3 ch
sth

Spelling & Dictionary Insight

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: south is anoun and sthapronoun. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 40427, derived from the frequency rank of both members and their visual similarity.

south is recorded at frequency rank #392, classified as anoun, pronounced /saʊθ/. sth is at rank #40,035, tagged as apron.

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 40427, this pair ranks #267,700 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of south vs sth

Shared letters: hst. Private to "south": ou. Private to "sth": -.

"south" · 5 letters · shape CVVCC  ·  "sth" · 3 letters · shape CCC

Known mistypes of this pair

  • southosuth · sotuh · souht · southh · soutth · ssouth · suoth

Frequently Asked Questions

Can "south" and "sth" be used interchangeably?
No - they are not even the same part of speech. "south" is a noun and "sth" a pronoun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "south" or "sth"?
"south" is the more common of the two: it sits at frequency rank #392 in our English list, against #40,035 for "sth". 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