Hard and Soft Woods
There is a strong relationship between the properties of wood and the properties of the particular tree that yielded it. The density of wood varies with species. The density of a wood correlates with its strength (mechanical properties). For example, mahogany is a medium-dense hardwood that is excellent for fine furniture crafting, whereas balsa is light, making it useful for model building. One of the densest woods is black ironwood.
It is common to classify wood as either softwood or hardwood. The wood from conifers (e.g. pine) is called softwood, and the wood from dicotyledons (usually broad-leaved trees, e.g. oak) is called hardwood. These names are a bit misleading, as hardwoods are not necessarily hard, and softwoods are not necessarily soft. The well-known balsa (a hardwood) is actually softer than any commercial softwood. Conversely, some softwoods (e.g. yew) are harder than many hardwoods.
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Famous quotes containing the words hard and, hard, soft and/or woods:
“Some hard and dry book in a dead language, which you have found it impossible to read at home, but for which you still have a lingering regard, is the best to carry with you on a journey.”
—Henry David Thoreau (1817–1862)
““It’s hard to tell you how I managed it.
When I saw the shaft had me by the coat,
I didn’t try too long to pull away,
Or fumble for my knife to cut away,
I just embraced the shaft and rode it out....””
—Robert Frost (1874–1963)
“Though now in her old age, in her young age
She had been beautiful in that old way
That’s all but gone; for the proud heart is gone,
And the fool heart of the counting-house fears all
But soft beauty and indolent desire.”
—William Butler Yeats (1865–1939)
“He asked if I would sell my Christmas trees;
My woods the young fir balsams like a place
Where houses all are churches and have spires.
I hadn’t thought of them as Christmas trees.”
—Robert Frost (1874–1963)