ISSN vs its, What's the Difference?

Which to use

“ISSN” is an abbrev and “its” is an adjective - they look or sound alike but fill different roles in a sentence.

#37,166
“ISSN” frequency rank: #18,002
“its” frequency rank: 55168
confusion score

Side-by-Side Comparison

Feature	ISSN	its
Definition	Sistema internacional de identificación única de publicaciones periódicas o seriadas, tales como periódicos y revistas, lo cual facilita su clasificación y ubicación en bibliotecas.	Su, sus; que pertenece a un animal o una cosa.

Where the eye mixes ISSN and its

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch

ISSN

3 ch

its

Look-alike desk: ISSN vs its

These two trip readers on the page rather than in the ear: ISSN is [ˈisn] while its is /ɪts/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (abbrev vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 55168, derived from the frequency rank of both members and their visual similarity.

ISSN is recorded at frequency rank #37,166, classified as anabbrev, pronounced [ˈisn]. its is at rank #18,002, tagged as anadj, pronounced /ɪts/.

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 55168, this pair ranks #80,120 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of ISSN vs its

Shared letters: is. Private to "ISSN": n. Private to "its": t.

"ISSN" · 4 letters · shape VCCC · "its" · 3 letters · shape VCC

Known mistypes of this pair

ISSN ← isn · isns · issnn · sisn

Frequently Asked Questions

Can "ISSN" and "its" be used interchangeably?

No - they are not even the same part of speech. "ISSN" is an abbrev and "its" an adjective, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "ISSN" or "its"?

"its" is the more common of the two: it sits at frequency rank #18,002 in our Spanish list, against #37,166 for "ISSN". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

Full dictionary entry for "ISSN" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "its" - compare definitions side by side with the headword page. Word entry
This pair ranks #80,120 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
"ISSN" and "its" also get mixed up with nearby pairs, the highest-scored neighbour is "ISSN vs issue". Nearby pair
Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #80,120 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.