mesvsmouWhat's the difference?

Quick tell: mes is a noun, mou is an adjective, so they fill different roles in a sentence.

Which to use

“mes” is a noun and “mou” is an adjective - they look or sound alike but fill different roles in a sentence.

#403
“mes” frequency rank
#46,072
“mou” frequency rank
46475
confusion score

Side-by-Side Comparison

Feature mes mou
Definition Cada una de las doce partes, de duración variable según el sistema pero similar al ciclo lunar, en que se divide el año. Blando.

Where the eye mixes mes and mou

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch
mes
3 ch
mou

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: mes is [ˈmes] while mou is [mu]. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 46475, derived from the frequency rank of both members and their visual similarity.

mes is recorded at frequency rank #403, classified as anoun, pronounced [ˈmes]. mou is at rank #46,072, tagged as anadj, pronounced [mu].

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 46475, this pair ranks #125,502 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of mes vs mou

Shared letters: m. Private to "mes": es. Private to "mou": ou.

"mes" · 3 letters · shape CVC  ·  "mou" · 3 letters · shape CVV

Frequently Asked Questions

Can "mes" and "mou" be used interchangeably?
No - they are not even the same part of speech. "mes" is a noun and "mou" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "mes" or "mou"?
"mes" is the more common of the two: it sits at frequency rank #403 in our Spanish list, against #46,072 for "mou". 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