Wood
noun · /wo͝od/
The hard fibrous substance consisting of basic xylem that makes up the greater part of the stems, branches and roots of trees and shrubs — and is found, to a limited extent, in herbaceous plants.
If the definition isn't complicated enough, let's add that wood is everywhere — in every part of our planet, in every stage of our lives. Every single day we touch, feel, and consume something made of wood. This ordinary material lives an ordinary life and only gets noticed when it dresses up an out-of-the-ordinary design or product. For the sake of this story, it's worth mentioning that wood has lived a long and happy life and would very much like to live peacefully — with or without us. We humans, on the other hand, cannot live without wood, or nature in general. Strange enough, we know very little about it. So let's talk about it.
Where Wood Comes From
Wood is the natural evolution of basic leafy plants. In a competitive, dynamic environment where photosynthesis converts resources into food, some plants needed to adapt — to grow taller and develop larger green surfaces to absorb more light. Those green surfaces are leaves, and those taller plants are now trees.
Wood is a living infrastructure where resources are transported back and forth between departments. CO₂, H₂O, and minerals flow through the wood highway and get transformed into energy — which is then converted into fiber mass or invisible-yet-essential resources, like oxygen.
The Same — but Very Different
Wood comes in many colors, species, shapes, and forms — very much like the human race. While woods are all different, they're all the same in one sense: the plant-growth process produces wood's fibrous substance and, along the way, consumes or produces certain chemical elements (mostly good for the environment).
Wood ranges from very dark ebony to bleached white. Density and durability range from the ultra-hard Australian Buloke and Brazilian Ebony to softwoods like alder or white pine. Some species aren't commercially available, so by industry standard the hardest commercially available species is generally agreed to be Hickory, measuring 1,820 lbs (8,100 N) on the Janka scale. "Old Hickory" is, no accident, the nickname of one of the most iconic U.S. presidents.
Hardness coefficient plays only a partial role in furniture quality. Other characteristics matter just as much — joint strength, finishing, sanding, and environmental tolerance. It's noteworthy that European Beechwood scores higher than red oak, maple, and birch when it comes to furniture manufacturing.
Why This, Why That?
What makes one wood harder than another?
A hardwood isn't necessarily a denser material, and a softwood isn't necessarily less dense. Balsa, for example, is one of the lightest, least dense woods — and it's classified as a hardwood.
The real distinction has to do with plant reproduction. All trees reproduce by seed, but the seed structure varies. Hardwood trees are angiosperms — they produce seeds with some covering (a fruit like an apple, or a shell like an acorn).
Softwoods are gymnosperms. Their seeds fall to the ground "as is," with no covering. Pine trees — whose seeds grow in hard cones — fall into this category. In conifers, the mature seeds are released into the wind to spread.
For the most part, angiosperms shed their leaves in cold weather while gymnosperms keep theirs year-round. So it's also accurate to say evergreens are softwoods and deciduous trees are hardwoods.
Evergreens do tend to be less dense than deciduous trees, while most hardwoods are denser and sturdier. There's a direct link with seasonal change, growth rate, and leaf type — but at the core, the seed and reproduction system is the main differentiator. Hardwood trees have large vessels for transporting water (visible as the "grain" under a microscope). They grow and mature more slowly, absorb less water and moisture, and produce more oxygen and ozone along the way. Higher density too.
If You Know Better, You Choose Better
Now that you're an expert in wood science, let's recap — in terms that won't put the average furniture customer to sleep.
The more wood, the better the furniture. The more solid wood, the better — and this matters, because some manufacturers loosely (and conveniently) call medium-density boards, composites, and other substitutes "all wood." By that standard, paper and cardboard would qualify too. Let's draw a line and keep the quality discussion reasonable — and the expectations for functionality and longevity reasonable as well.
Solid wood preserves its original shape and composition longer than almost any natural material. It provides a healthy, non-chemically or artificially modified product that may have aesthetic imperfections — but has the perfect ingredients for a healthy, eco-friendly lifestyle. Hardwoods retain shape much longer than softwoods, and they tolerate mechanical stress, dents, and scratches — all the accidents of the journey called life — far better. Hardwoods are also the most eco-friendly woods: a usable product for the long term, most often harvested in the most eco-conscious manner. Softwoods, by contrast, are sometimes harvested erratically.
— By Furniture Ninja @ Romina Furniture
