ANNUAL - only once
PERENNIAL - year after year
term "perennial" refers to herbaceous (“green") plants since woody plants, such as trees, are perennial by definition. Perennials tend to bloom for just a short time — one to three weeks — each year
Biennial plants have a two-year life cycle.
Some plants that are perennials in their native region may be considered annuals in other regions. These types of plants are sometimes called "half-hardy annuals" or "frost-tender perennials."