hard. fibrous inner part of tree trunks. branches. and stems. The secondary xylem of seed plants.

Merriam-Webster Online Dictionary
wood (adjective)
archaic violently mad
wood (noun)
1.
a) a dense growth of trees usually greater in extent than a grove and smaller than a forest - often used in plural but singular or plural in construction
b) - woodland
2.
a) the hard fibrous substance consisting basically of xylem that makes up the greater part of the stems, branches, and roots of trees or shrubs beneath the bark and is found to a limited extent in herbaceous plants
b) wood suitable or prepared for some use (as burning or building)
3.
a) something made of wood
b) a golf club having a thick head - wooden , also a golf club having a similar head made of metal
wood (adjective)
1.
- wooden
2.
suitable for cutting or working with wood - a wood saw
3.
living, growing, or existing in - woods woods trails
wood (verb)
intransitive verb
transitive verb
to gather or take on wood to cover with a growth of trees or plant with trees
Wood (biographical name)
Grant (DeVolson) 1892–1942 Am. painter
Wood (biographical name)
Leonard 1860–1927 Am. physician & gen.
wood
wood (Wikipedia)

 Pine 
 Spruce 
 Larch 
 Aspen 
 Birch 
 Alder 
 Beech 
 Oak 
 Elm 
 Cherry 
 Pear 
 Maple 
 Linden 
 Ash 

Wood is a porous and fibrous structural tissue found in the stems and roots of trees and other woody plants. It is an organic material, a natural composite of cellulose fibers that are strong in tension and embedded in a matrix of lignin that resists compression. Wood is sometimes defined as only the secondary xylem in the stems of trees, or it is defined more broadly to include the same type of tissue elsewhere such as in the roots of trees or shrubs.[citation needed] In a living tree it performs a support function, enabling woody plants to grow large or to stand up by themselves. It also conveys water and nutrients between the leaves, other growing tissues, and the roots. Wood may also refer to other plant materials with comparable properties, and to material engineered from wood, or wood chips or fiber.

Wood has been used for thousands of years for fuel, as a construction material, for making tools and weapons, furniture and paper. More recently it emerged as a feedstock for the production of purified cellulose and its derivatives, such as cellophane and cellulose acetate.

As of 2005, the growing stock of forests worldwide was about 434 billion cubic meters, 47% of which was commercial. As an abundant, carbon-neutral renewable resource, woody materials have been of intense interest as a source of renewable energy. In 1991 approximately 3.5 billion cubic meters of wood were harvested. Dominant uses were for furniture and building construction.

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