Understanding Tkinter window, and Canvas sizes

I can’t get any information on exactly how window and canvas sizes work in Tkinter.

If I create a window, I can set its size using either the .configure() method or the .geometry() method. If I set both, the .geometry() method appears to override the .configure() method, and I know I can also set the position using the .geometry() method.

I can also create a Canvas object and pack it inside the window. Regardless of the size I set for the canvas, either too large or too small, it still fits neatly inside the window.

Here is a code snippet to illustrate my experiments:

root = tkinter.Tk()root.configure(background='#ECECEC', padx=20, pady=20)root.geometry('800x600+200+200')root.configure(width=1200, height=700)canvas = tkinter.Canvas(root, width=600, height=1400, background='white')canvas.pack(fill="both", expand=True)root.mainloop()

What’s the relationship between the window .configure() and .geometry() methods, and how should this affect the included canvas?