How to Say "are important" in Spanish
The Spanish word for “are important” is “importan” — A1 level. This is a very common word in everyday Spanish.

Examples
Los pequeños detalles siempre importan.
The small details always matter.
Para mí, sus palabras no me importan en absoluto.
For me, their words don't matter at all.
The 'Gustar' Structure
When using 'importar' to mean 'to matter,' the item that matters is the grammatical subject. Since 'importan' is plural, the thing(s) that matter must be plural: 'Los regalos (subject) importan (verb) a ella (indirect object).'
Directly Addressing People
This form 'importan' is used when speaking formally (Ustedes) or about a group of people (Ellos/Ellas) in the present tense: 'Ustedes importan la paz.' (You all value peace.)
Confusing the Subject
Mistake: “Yo importan la opinión. (I matter the opinion.)”
Correction: La opinión me importa. (The opinion matters to me.) Remember, the thing that matters is the subject, and the person affected is the object (me/te/le/nos/os/les).
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