Links two things side by side
Encoding Strategies:
repetition

The most useful translation for y is and, because it nearly always just links two things side by side0.
and
Connects two things together just like the English word "and."
- Pan y mantequilla = Bread and butter
- Español e inglés = Spanish and English ("y" becomes "e" before words starting with an "ee" sound)
- Me gustan los perros, los gatos y los pájaros = I like dogs, cats, and birds
and (emphatic opener)
Starts a sentence to add force or surprise — not connecting to anything before it, just heightening what follows.
- ¡Y si no llega a tiempo! = And what if he doesn't arrive in time!
- ¿Y si fuera otra la causa? = And what if the cause were something else?