Exotic and Invasive Species: difference?

Could mean the same thing actually, but slightly different in my books:

Invasive species are usually species that have been introduced into an ecosystem that is other than their own. While all species compete to survive, invasive species appear to have specific traits or specific combinations of traits that allow them to outcompete native species. In some cases the competition is about rates of growth and reproduction.

Exotic species are those organisms introduced into habitats where they are not native. Invasive exotic species are organisms not native to a region, and whose introduction causes economic or environmental harm or harm to human health. In their natural habitats, these organisms developed stable populations and complex relationships with other species. When removed from the predators, parasites, diseases and competitors that have kept their numbers in check, species introduced into new habitats often overrun their new home and crowd out native species. Once established, exotic species can rarely be eliminated.