Threatened vs. Endangered

What is the difference between a threatened species and an endangered species?

THREATENED

Any species that is likely to become endangered within the foreseeable future throughout all or a significant portion of its range, or a species that, at present, is not at risk of extinction, but will probably become an endangered species in the future.

ENDANGERED

Any species which is in danger of extinction throughout all or a significant portion of its range, or a species that currently, is in risk of extinction.