Hardwood Offers More Diversity in Appearance. With hardwood, you have many species to choose from, and each has its own unique look, feel, and grain patterns. This is compounded by the fact that different cuts also produce different levels of grain consistency.
Finally, hardwood flooring also comes in varying grades, which will lead to either good consistency through the lot (high-grade) or a wide range of disparate pieces in the lot. Because of this, hardwood gives you more freedom to choose exactly the look that you want. You can pick through a variety of species and options to find the look that perfectly matches the style of your environment.
Bamboo, on the other hand, has a narrower range of diversity. The most distinctive appearance characteristic of bamboo lies in its construction, of which there are three types:
Vertical-grain bamboo is created with narrow strips of bamboo glued together on-edge, giving the material a striped appearance.
Flat-grain bamboo is made with thin, flat layers of bamboo glued together, similar to the way plywood is constructed.
Stranded bamboo is made up of bamboo fibers bound with resin; this has the variegated look of shredded material.