what is the difference gramtically between these two sentences
Necesitamos sillas más cómodas.
Se necesitan sillas más cómodas.
This is the difference between using the ACTIVE voice = Necesitamos sillas = WE need seats. A person is the subject = we
PASSIVE voice = Se necesitan sillas. Now the subject is "chairs" are needed. (you don't know by WHOM)
Sra