In emacs, I can change the font-size of current buffer by text-scale-adjust. However, to change the font, I only find functions like set-face-font or set-frame-font, which will change the font globally in emacs (or change all buffers' font within current frame).
Is there a function in emacs that only changes the font (default font) of current buffer, while not modifying the fonts in any other buffers?