1. The interjection: the vocative Particles of interjection that are used to call or address someone are vocative particles. they are called – أَدَوَاتُ النَّدَاء and are as follows: يَا – O! (masculine and feminine) يَا أَيُّهَا –  O! (masculine) يَا أَيَّتُهَا –  O! (feminine) When يَا is followed by a noun in the singular, it