The research talks about the grammatical term in the book (Al-Kafia in al-Nahw) by Ibn Al-Hajeb (d.: 646 AH), and he studied the rooting of his terminology by making comparisons between the terms used by him, and with his predecessors, such as Sibawayh, Al-Faraa, Al-Mubarred, Ibn Al-Sarraj, Al-Zamakhshari, and others.The research monitored the close connection between the semantic and idiomatic me...