A working copy of the organizational structure that holds specific values and can be used in a program to model a discrete entity $($i$.$e$.$ an individual Student$)$

A function that is attached to an object $($i$.$e$.$ a "get$\_$grade" function for an individual student$)$

A value that is attached to an object $($i$.$e$.$ an individual student's name$)$

An organizational structure that defines a complex structure of variables and functions that are "tightly coupled" with one another $($i$.$e$.$ the "blueprint" for a Student$)$