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yex
עצ
'yex' (pronounced 'yetz') appears to have two meanings.
Most of the time1), 'yex' is translated as “tree”. Although there are several other Hebrew words that are used for trees, the famous “tree of life” and “tree of the knowledge of good and evil” are both indicated as being 'yex'.
A secondary usage based on this meaning is to indicate “wood”, ie, a corpse of a tree, typically used as fuel or a building or crafting material.
(See also aleh).
However, 'yex' is often interpreted differently, as either a noun meaning “counsel” or a verb form meaning “to consult”. Obviously, these meanings are closely related but there may be some discrepancies regarding the directionality of information flow. 
are there?
It is possible that the verb meaning “consult” may stem from the act of consulting the tree of knowledge.