Institutionalized phrases are conventionalizedทำให้เป็นธรรมเนียม phrases, such as salt and pepper, traffic light and to kindle excitementความตื่นเต้น. They are semanticallyประโยค and syntacticallyทางไวยากรณ์ compositionalส่วนประกอบ, but statisticallyทางสถิติ idiosyncratic. Regarding the phrase traffic light, traffic and light both retain simpex senses but produce a compositional reading by combining constructionally.
idiosyncratic