They can both be used to express similarity or the connection between two activities or properties.

There is no difference they both do the same job.

Son sinónimos. Los dos significan "también"

These two words "also" and "as well" is used between the subject and the main verb . It links two statement together. There are more word usage you can learn from me if you don't mind. You are free to contact me so I can assist you learn more .