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"Espadas" is a form of "espadar", a transitive verb which is often translated as "to swingle". "Oro" is a form of "oro", a noun which is often translated as "gold". Learn more about the difference between "espadas" and "oro" below.
espadar
A transitive verb is a verb that requires a direct object (e.g., I bought a book.).
1. (general)
a. to swingle
Después de cosechar y secar los tallos de lino, eran espadados para separar las fibras.After harvesting and drying flax stems, they were swingled to separate fibers.
el oro()
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
a. gold
Hay una olla llena de oro al final del arco iris.There's a pot of gold at the end of the rainbow.