This is the 7968th most frequent Spanish word.
molly
The Spanish word "molly" does not exist; it may be an English term or a misunderstanding.
Here, 'Molly' refers to the proper noun and name of a person.
Mi mejor amiga, Molly, es muy buena tocando el piano.
My best friend, Molly, is very good at playing the piano.
In this sentence, 'molly' refers to a species of fish known for its colorful appearance.
Hoy en el acuario vi a un pez molly de colores brillantes.
Today at the aquarium I saw a brightly colored molly fish.
Here, 'Molly' is used as a colloquial term, often requiring contextual understanding, perhaps used figuratively dependent on the discussion.