These three words, selvage, grain and bias, look as if they have no real relationship with each other. However, in the world of fabric they are connected and knowing about them will help with purchasing fabric and ultimately cutting and sewing more effectively. So lets learn about what is selvage, grain and bias. Note: There are two ways to spell selvage – selvedge (British English) or selvage (American English). Here is an overview image so you can start to familiarize yourself with the terms before we get started.