A: Both terms are virtually interchangeable and mean ‘the process’ of breaking down the bamboo stalk into a fiber.  Because the end fiber is indistinguishable from other wood pulps (ie; eucalyptus, beech wood, pine, etc) the Federal Trade Commission requires that it be called either viscose, or rayon from bamboo. We’ve chosen to use both words in describing our fabric so that customers become familiar with either term.  read more.