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"Árboles" is a form of "árbol", a noun which is often translated as "tree". "Rosas" is a form of "rosa", a noun which is often translated as "rose". Learn more about the difference between "árboles" and "rosas" below.
el árbol()
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
2. (mechanics)
a. shaft
El árbol propulsor se tuvo que reemplazar después del accidente.The drive shaft had to be replaced after the accident.
3. (nautical)
la rosa, el rosa()
A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
