royal academy; royal academy of arts; royal agaric; royal air force; royal blue; royal brace; royal canadian mounted police; royal casino; royal charter; royal court; royal family; royal fern; royal flush; royal house; royal jelly; royal line; royal mast; royal national eisteddfod; royal osmund; royal palm; royal poinciana; royal purple; royal road; royal society; royal society of london for improving natural knowledge; royal stag; royal tennis; royal velvet plant;