What is the difference between sunflower and yellow bell?

Sunflowers (Helianthus annuus) are large, tall plants known for their bright yellow, seed-filled heads that follow the sun. Yellow bells, commonly known as yellow trumpetbush (Tecoma stans), are flowering shrubs characterized by their tubular yellow flowers and a more compact growth habit. While sunflowers are typically grown for their seeds and ornamental value, yellow bells are often cultivated for their vibrant blooms and ability to attract pollinators. Additionally, sunflowers are annuals, while yellow bells are usually perennials.