IOMvsipsWhich spelling fits?

Quick tell: IOM is a name, ips is a symbol, so they fill different roles in a sentence.

Which to use

“IOM” is a name and “ips” is a symbol - they look or sound alike but fill different roles in a sentence.

#43,211
“IOM” frequency rank
#20,676
“ips” frequency rank
63887
confusion score

Side-by-Side Comparison

Feature IOM ips
Definition Initialism of Institute of Medicine. Initialism of inch(es) per second.

Letter map: IOM vs ips

Shared letters muted; letters that set IOM and ips apart highlighted. Shared run: 1.

3 ch
IOM
3 ch
ips

Part-of-speech tell for IOM / ips

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: IOM is aname and ipsasymbol. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 63887, derived from the frequency rank of both members and their visual similarity.

IOM is recorded at frequency rank #43,211, classified as aname. ips is at rank #20,676, tagged as asymbol.

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 63887, this pair ranks #80,572 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of IOM vs ips

Shared letters: i. Private to "IOM": mo. Private to "ips": ps.

"IOM" · 3 letters · shape VVC  ·  "ips" · 3 letters · shape VCC

Frequently Asked Questions

Is swapping "IOM" for "ips" ever safe?
No - they are not even the same part of speech. "IOM" is a name and "ips" a symbol, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "IOM" or "ips"?
"ips" is the more common of the two: it sits at frequency rank #20,676 in our English list, against #43,211 for "IOM". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Pair "IOM" vs "ips" is on the table, pick a follow-up below.

  • Full dictionary entry for "IOM" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ips" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #80,572 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "IOM" and "ips" also get mixed up with nearby pairs, the highest-scored neighbour is "IOM vs ith". Nearby pair

Confusion rank #80,572 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list