This is the 23rd most frequent Malay word.
pihak
"Party" or "side" (as in a group, organization, or entity).
The word 'pihak' refers to an organization or a representative body, in this case, the school administration.
Pihak sekolah telah mengambil keputusan untuk memulakan kelas tambahan.
The school administration has decided to start extra classes.
In this use, 'pihak' denotes authorities or governing bodies.
Pihak berkuasa sedang menyiasat kejadian itu.
The authorities are investigating the incident.
Here, 'pihak' refers to a side or party, specifically the neighbor's side in a disagreement.