What does "common sunflower" mean?

annual sunflower grown for silage and for its seeds which are a source of oil; common throughout United States and much of North America

What is a synonym for "common sunflower"?

Common synonyms include: helianthus annuus, mirasol, sunflower.

Rare ·Advanced level

Noun

1
annual sunflower grown for silage and for its seeds which are a source of oil; common throughout United States and much of North America wordnet