emvsenaWhich spelling fits?

Quick tell: em is a preposition, ena is a contraction, so they fill different roles in a sentence.

Which to use

“em” is a preposition and “ena” is a contraction - they look or sound alike but fill different roles in a sentence.

#7,152
“em” frequency rank
#39,197
“ena” frequency rank
46349
confusion score

Side-by-Side Comparison

Feature em ena
Definition En. Contracción de la preposición en y el artículo la

Where the eye mixes em and ena

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

2 ch
em
3 ch
ena

Why the eye confuses em with ena

These two trip readers on the page rather than in the ear: em is [ĩ] while ena is /ˈe.na/. 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 (preposition vs contraction), which is usually the fastest check. Our composite confusion score for this pair is 46349, derived from the frequency rank of both members and their visual similarity.

em is recorded at frequency rank #7,152, classified as aprep, pronounced [ĩ]. ena is at rank #39,197, tagged as acontraction, pronounced /ˈe.na/.

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 46349, this pair ranks #126,243 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of em vs ena

Shared letters: e. Private to "em": m. Private to "ena": an.

"em" · 2 letters · shape VC  ·  "ena" · 3 letters · shape VCV

Frequently Asked Questions

Do "em" and "ena" mean the same thing in a sentence?
No - they are not even the same part of speech. "em" is a preposition and "ena" a contraction, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "em" or "ena"?
"em" is the more common of the two: it sits at frequency rank #7,152 in our Spanish list, against #39,197 for "ena". 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 "em" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ena" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #126,243 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "em" and "ena" also get mixed up with nearby pairs, the highest-scored neighbour is "ena vs EPL". Nearby pair

Confusion rank #126,243 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list