The Vietnamese word "cái" is a versatile word that can serve both as a noun and an adjective, and it has several meanings and usages.
Noun: "Cái" can refer to a mother or a female figure in certain contexts, particularly when referring to the relationship with children or subordinates. For example, in some phrases, it can denote a mother’s responsibility for her child's behavior.
Noun (Colloquial): It can also refer to a young girl of one’s rank or below.
Noun (Culinary): "Cái" can be used in culinary contexts to refer to the mother of vinegar or other fermented substances.
Noun (Food): It can denote the solid part of liquid food.
"Cái" is a multifaceted word in Vietnamese that can refer to motherhood, culinary substances, or serve as a classifier for objects.