What is the difference between morphological divergence and morphological convergence?

Morphological divergence is the macroevolutionary change in the morphological structure within a line of evolutionary descent over time, resulting in similar traits that can be found in a variety of species. (ex: ancient rodent -> now same phallangial (hand) structure in bats, whales, and humans)

Morphological convergence is the macroevolutionary development of a similar morphological structure by two or more evolutionary lineages. (ex. penguin, shark, and dolphin fins/flippers have similar uses but were developed by very different evolutionary lineages)

Morphological Divergence

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What is the difference between morphological divergence and morphological convergence?

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Well, suppose you have a population of birds in an environment where their major food source is a small nut with a soft shell, however, there are much more nutritious nuts, but they have harder shells that the birds cannot crack. One day, a mutation occurs in one bird that grants it much greater jaw strength and is now able to eat the more nutritious nuts. Eating those nuts, he becomes larger and better able to compete for females. Thus, he will be able to reproduce more than the other birds, and pass on his new jaw strength to his offspring, and so on and so forth, until the one bird with the one mutation, has become a whole new species.