Ayane is my best friend.

He said that a stranger nearby is more useful than a distant relative.

Sudden Infant Death Syndrome refers to the sudden death of an infant for which the cause remains unknown.

He is an expert in musicology.

This room is covered with soundproofing material, so the sound doesn't leak outside.

He honked the car horn to get my attention.

The treble clef is often used in musical scores.

He is good at reading the treble clef.

Palatalization is a part of phonetics, referring to the process where a certain sound approaches the palate.

This language is characterized by implosives.