[Tkinter] Trying to change font size w/o changing button size

[python63]

add width and height values to button to force desired size.

when i do that, the button becomes almost as large as the window. the root.geometry('500x500') is in pixels , the button is still 20 characters high and wide, not sure what 20/20 on frame is is, doesnt seem like pixels or characters. i hope i am explaining this correctly.