Is floral foam the same as Oasis?

As a keen gardener and occasional floral arranger, I've often come across the term 'floral foam' and its close cousin 'Oasis'. But I've always been left wondering, are they truly one and the same? Is floral foam simply a generic term for any type of foam used in floral arrangements, or is Oasis a specific brand that's synonymous with floral foam? Could there be subtle differences in their composition, absorbency, or even durability that could affect my floral creations? Understanding the nuances between these two materials could help me make more informed decisions when it comes to selecting the right support for my flowers. So, is floral foam indeed the same as Oasis, or are there distinctions worth noting?