memvsMSWhat's the difference?

Quick tell: mem is a noun, MS is a name, so they fill different roles in a sentence.

Which to use

“mem” is a noun and “MS” is a name - they look or sound alike but fill different roles in a sentence.

#32,499
“mem” frequency rank
#2,167
“MS” frequency rank
34666
confusion score

Side-by-Side Comparison

Feature mem MS
Definition The thirteenth letter of many Semitic alphabets/abjads (Phoenician, Aramaic, Hebrew, Syriac, Arabic and others). Abbreviation of Mato Grosso do Sul: a state of Brazil.

Letter map: mem vs MS

Shared letters muted; letters that set mem and MS apart highlighted. Shared run: 1.

3 ch
mem
2 ch
MS

Grammar separator: mem vs MS

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: mem is anoun and MSaname. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 34666, derived from the frequency rank of both members and their visual similarity.

mem is recorded at frequency rank #32,499, classified as anoun, pronounced /mɛm/. MS is at rank #2,167, tagged as aname.

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 34666, this pair ranks #318,810 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of mem vs MS

Shared letters: m. Private to "mem": e. Private to "MS": s.

"mem" · 3 letters · shape CVC  ·  "MS" · 2 letters · shape CC

Frequently Asked Questions

Is swapping "mem" for "MS" ever safe?
No - they are not even the same part of speech. "mem" is a noun and "MS" a name, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "mem" or "MS" show up more?
"MS" is the more common of the two: it sits at frequency rank #2,167 in our English list, against #32,499 for "mem". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

You've compared "mem" and "MS". Here's where to go from here.

  • Full dictionary entry for "mem" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "MS" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #318,810 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "mem" and "MS" also get mixed up with nearby pairs, the highest-scored neighbour is "mem vs MMP". Nearby pair

Confusion rank #318,810 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