What is the plural form of Yerba?

The plural form of yerba is yerbas. Yerba refers to the Ilex paraguariensis plant native to South America. The leaves and twigs are dried to make the caffeinated mate drink. The plural form of mate is mates. The plural possessive form of “Mate” is “Mates’”. The dogs wagged their tails when their mates’ cars approached. … Read more