Pronounced [yer-bah mah-teh] (or [sher-bah mah-teh] in Rioplatense Spanish). Also known as Ilex paraguariensis, a holly plant natively grown in South America, particularly in Northern Argentina, Paraguay and Southern Brazil (the term erva mate is used there more often). Yerba mate is used to make a beverage known as mate in Spanish, or chimarrão in Portugese. Oftenly, the term yerba mate is used to describe not only a plant, but also a final product of grinding, drying and aging the plant. Wikipedia article
Container for storing yerba mate, usually made of tin with a sprout on top for pouring yerba mate into the gourd. Yerbera is used mainly as a more travel-friendly option for carrying yerba mate or as a long-term storage. Arguably keeps yerba mate fresh for longer periods of time.
Plural of yuyo. In Spanish, term yuyos is used to describe any kind of wild herbs used as a condiment for food or drink. Yuyos as a tereré condiment are very popular in Paraguay and are used as a flavor enhancement or for their medicinal properties.