A small rich text rule class that matches the word 'buzzsaw' or 'buzzsaws' and replaces it with an image. It sets the image path to textures/ui/buzzsaw.png and hides the original text.
[RichTextPanel( @"\b[Bb]uzzsaws?\b" )]
public class RichTextBuzzsaw : RichTextBase
{
public override string ImagePath => "textures/ui/buzzsaw.png";
public override bool HideText => true;
}