Agave = a succulent plant with rosettes of narrow spiny leaves and tall flower spikes, native to the southern USA and tropical America
Agaves and Yuccas
Hunker.com – Both plants are succulent and grow from a rosette. The agave typically has sharp spines on the leaf edges whereas the yucca has none. Yucca plants also have thinner, straighter, and less succulent leaves than agaves and with time produce trunks.