Cognates
-ción and -zione: one ending, hundreds of words
English -tion becomes Spanish -ción and Italian -zione almost every time. One ending unlocks hundreds of words in both languages at once.
· 3 min read

Learn one ending, and hundreds of words snap into focus across two languages at once. If Parlet has a flagship pattern, this is it: English -tion becomes Spanish -ción and Italian -zione, over and over, with a regularity that feels almost like cheating.
The one rule
Take nation. Peel off the -tion and you are left with a stem, na-, that all three languages share. Spanish caps it with -ción, Italian with -zione, and you have nación and nazione without translating a thing — you have only swapped the tail.
-tion → -ción → -zione
Now do it in bulk. The stem barely flinches; only the ending refracts.
| English | Spanish | Italian |
|---|---|---|
| nation | nación | nazione |
| station | estación | stazione |
| information | información | informazione |
| solution | solución | soluzione |
| condition | condición | condizione |
| emotion | emoción | emozione |
Why the pattern holds
These endings are not translations of one another. They are three children of one Latin parent: -tiō (stem -tiōn-), the suffix Rome used to turn a verb into an abstract noun — nātiō, "a being born," from nāscī. Spanish inherited it as -ción, Italian as -zione, and English borrowed the very same words through Latin and French as -tion. That shared ancestry is why the alignment is so clean: you are not matching three separate vocabularies, you are watching one word wear three coats.
Hundreds of English nouns end in -tion, and the overwhelming majority keep a -ción and a -zione twin on call. Recognise the rule once and it keeps paying out: education / educación / educazione, tradition / tradición / tradizione, creation / creación / creazione. Its close cousin -sion behaves the same way — decision becomes decisión becomes decisione — but that is a pattern for another day. Keep your eye on -tion for now.
The quirks worth knowing
The rule is reliable, not robotic. A few small habits are worth filing away so the exceptions never trip you.
Spanish flinches at s-
Spanish dislikes beginning a word with s followed by a consonant, so it props one up with an e-. That is why station is estación in Spanish but plain stazione in Italian, which has no such hang-up. The same reflex gives you España and escuela; here it simply means the Spanish twin starts one letter early.
The -ction squeeze
When English shows -ction, the two languages part ways in a predictable manner. Spanish doubles the c: action becomes acción, section becomes sección, direction becomes dirección. Italian melts the whole cluster into a single z: azione, sezione, direzione. One origin, two tidy ways of smoothing the same bump.
Spotting it in the wild
This is where the pattern earns its keep — reading, on the ground, when nobody hands you a glossary. A Spanish train board reads estación; an Italian one, stazione. A museum label sends you to a sección of the colección; in Rome it is a sezione of the collezione. An airport help desk is marked información in Barcelona and informazione in Bologna, the same word wearing two coats above the same queue. Even a shop window advertising a sale falls into line: promoción in Seville, promozione in Turin, and you have read it before you have thought about it. A yellow sign barks atención in Madrid and attenzione in Milan, and both mean the same thing: mind the step. You are not decoding from scratch — you are confirming a shape you already know.
None of this asks you to memorise word lists. It asks you to learn one boundary — where the stem ends and the ending begins — and then to trust it. Sharpen this single suffix and a whole class of Spanish and Italian words stops looking foreign the moment your eye lands on the last few letters. From here, the other endings — -dad, -oso, -sión — start to look like variations on a habit you have already caught.