FML and TTF are different types of font file formats.
TTF stands for "TrueType Font" and it is a font format that was developed by Apple and Microsoft in the 1980s. TTF fonts are widely supported on both Windows and Mac operating systems, and they can be used for both digital and print applications. They are vector-based, meaning that they can be scaled to any size without losing quality.
FML stands for "Flash Macromedia Language" and it is a font format that is used primarily in Flash animations and interactive content. They are raster-based, meaning that they are made up of pixels and they can't be resized without losing quality. They are not widely supported outside of the Flash environment and they are not commonly used in print or other digital applications.
In summary, TTF is a more versatile and widely supported font format that can be used for a variety of purposes, while FML is mainly used for Flash animations and interactive content and is not as widely supported as TTF.