In fonts, medium is usually between regular and bold and it doesn't really impact the size of text

If you want to use unique fonts in Word you can use Unicode characters from a font generator. You won't need to download anything, and can just find your favorite font and copy straight from the browser. The one I use is fontgenerator Plus there are many options with swoops and details that could work for your project

From the default Microsoft fonts, Bahnschrift might work on your Powerpoint.