Perennial
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In botany, the term perennial is used to differentiate a plant from shorter-lived annuals and biennials. It has thus been defined as a plant that lives more than 2 years. The term is also loosely used
Common chicory, Cichorium intybus, is a herbaceous perennial plant.
Dahlia plants are tender perennials that originate from climates that are warm all year round and need special care to survive cold winters.
Biennial plant
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A biennial plant is a flowering plant that, generally in a temperate climate, takes two years to complete its biological life cycle.
Perennial
…In botany, the term perennial (per- + -ennial, "through the year") is used to differentiate a plant from shorter-lived annuals and biennials. It has thus been defined as a plant that lives more than 2 years. The term is also loosely used to distinguish plants with little or no woody growth…
Parsley is a common example of a biennial plant.
The Sweet William Dwarf plant is a biennial plant.