I have two completely different fonts but the name given to both of those fonts are exactly the same and Windows keeps saying that the font is already installed but it is a different font!!! how do I fix???

Which fonts ?

two different fire fonts named blaze

From which foundries?

I don't know what is a foundry... one file (currently installed) is around 80kb and the other is 120kb

Windows is saying the names are the same. You have to uninstall one to get the other installed. Windows does not look at the design or anything other than the name.

The only way to get them both in together is if the (internal) names are different. Takes a font editor to do it.