object
Object is an English word that means a material thing that can be seen or touched, or a thing to which an action or feeling is directed.
In software user interface, mostly it indicates the items listed as users operation target (ex. files in a designated folder).
In object-oriented programming, it means the existent physical or abstract subject that the software is trying to deal with, which is modeled as a collection of datas and methods and reproduced on a computer. The model that defines object is called class. The object that is expanded on a computer memory based on the class is called instance, whose meaning is often used for object.