QUICK ANSWER
"Alone" is an adverb which is often translated as "solo", and "by myself" is a phrase which is often translated as "por mi cuenta". Learn more about the difference between "alone" and "by myself" below.
alone(
uh
-
lon
)An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
An adjective is a word that describes a noun (e.g., the big dog).
4. (by oneself)
by myself(
bay
may
-
sehlf
)A phrase is a group of words commonly used together (e.g., once upon a time).
a. por mi cuenta
I tried to fix the car by myself because I didn't have the money to take it to the repair shop.Traté de arreglar el carro por mi cuenta porque no tenía el dinero para llevarlo al taller.
b. por mí mismo (masculine)
My sister could not help me with my project, so I finished it by myself.Mi hermana no podía ayudarme con mi proyecto, así que lo terminé por mí mismo.
c. por mí misma (feminine)
I want to learn to do things by myself.Quiero aprender a valer por mí misma.
a. solo (masculine)
I enjoy living by myself because I don't like sharing a bathroom.Me gusta vivir solo porque no me gusta compartir el baño.