mechvsmphWhat's the difference?

Which to use

“mech” and “mph” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#25,471
“mech” frequency rank
#6,813
“mph” frequency rank
32284
confusion score

Side-by-Side Comparison

Feature mech mph
Definition A large piloted combat robot. Initialism of mile(s) per hour.

Where the eye mixes mech and mph

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

4 ch
mech
3 ch
mph

Visual trap between mech and mph

A purely visual mix-up. mech (/mɛk/) and mph (/ˌɛmpiˈeɪt͡ʃ/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 32284, derived from the frequency rank of both members and their visual similarity.

mech is recorded at frequency rank #25,471, classified as anoun, pronounced /mɛk/. mph is at rank #6,813, tagged as anoun, pronounced /ˌɛmpiˈeɪt͡ʃ/.

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 32284, this pair ranks #339,119 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of mech vs mph

Shared letters: hm. Private to "mech": ce. Private to "mph": p.

"mech" · 4 letters · shape CVCC  ·  "mph" · 3 letters · shape CCC

Known mistypes of this pair

  • mechemch · mceh · mecch · mechh · mehc · mmech

Frequently Asked Questions

Do "mech" and "mph" mean the same thing in a sentence?
No. They are said differently (/mɛk/ versus /ˌɛmpiˈeɪt͡ʃ/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "mech" or "mph"?
"mph" is the more common of the two: it sits at frequency rank #6,813 in our English list, against #25,471 for "mech". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

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

  • Full dictionary entry for "mech" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "mph" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #339,119 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "mech" and "mph" also get mixed up with nearby pairs, the highest-scored neighbour is "mech vs mensch". 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 #339,119 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