Final answer:
The root of 'plywood' is 'ply', referring to the layers of wood, while the root of 'implicit' is 'plic' from Latin 'plicare' meaning to fold.
Step-by-step explanation:
The root of the word plywood is 'ply', which implies layers or folds of wood veneer glued together. However, 'plywood' does not have a classical root and is more of a compound word. On the other hand, the root of the word implicit is 'plic', which comes from the Latin 'plicare', meaning to fold. In 'implicit', this root is preceded by the prefix 'im-', which means 'in' or 'within', implying that something is folded in or inherent.
Examples:
Implicit - im + plic + it (where 'im' is the prefix and 'plic' the root)
Plywood - ply + wood (where 'ply' can be considered the root, but is, in itself, an English construct)