Usage and meaning of "plus"

I have a question about this word: "plus".
Where can we use "plus"?
Do these phrases have any meaning? What are they?

• America Plus


• American Plus

Answer

Plus is Latin. Means "more" but in the additive way.

Non plus ultra = No más allá. No further than that.

1 plus 1.

When used in names, means "best", exaggeration, some kind of "push up". I'm just recalling this so you surely should check the Latin original term and the usage in English today.

In your examples. American Plus = American Best, American Top.

As with many Latin words, the translation is subjective to the context, but when used in branding, is just a "cliché" to say you're top.