This is the 3rd most frequent Romanian word.
și
"And".
Here, 'și' connects two actions, suggesting the simultaneous or sequential nature of the actions.
Tu să citești și să înveți bine!
You should read and study well!
In this sentence, 'și' is used as a conjunction meaning 'and', joining two subjects.
Ana și Maria merg la magazin.
Ana and Maria go to the store.
In this usage, 'și' means 'also' and indicates an addition to a previously mentioned idea.