and there are broad leaf, non cone bearing trees (like the holly!) that are evergreen

as well as needle-leafed/cone bearing trees like pines--that are often what is thought of when the term 'evergreen' is invoked.

there shrubs that keep leaves all year long but i tend to think of perennial being paired with annual (the first a plant that dies back, (loses its green/flowering top) but regrows season after season, vs a plant that dies completely with the first frost.

(and then there are the semi perennials.. like snap dragons. plants that act like perennials in places with mild winters/or if covered with an insulating layer of snow, but die completely if there is a hard winter.)