A pseudonym (literally “false name”) is a name that differs from an original orthonym (“true name”), and as popularly understood is a new name that a person assumes for a particular purpose.

He didn't mind not being on salary, with all of his compensation on the come.

The invention was to have a Satyr lodged in a little spinet, by which her majesty and the prince were to come

Of the fancy and intellect, the powers are only circumstantially different.