The term 'ส่วน (sùan)' is commonly used in Thai to refer to a part or portion of something that is considered a whole. It can be used to denote physical parts of a tangible item, or abstract parts of an idea, a group, or a collection. It is most often used after the noun it modifies. It is versatile and can be used with a wide range of nouns, adjectives, and phrases to express the concept of part or portion.