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QUICK ANSWER
"Anos" is a form of "ano", a noun which is often translated as "anus". "Hace dos días" is a phrase which is often translated as "two days ago". Learn more about the difference between "anos" and "hace dos días" below.
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
A phrase is a group of words commonly used together (e.g., once upon a time).
1. (general)
a. two days ago
Me la encontré a Susana en el parque hace dos días.I came across Susana in the park two days ago.
