Federalist vs federationalist - Help with Terminology

Hello there,

I'm fairly new to anarchism and have encountered a phrase in a recent philosophy book which mentions both terms as if they mean different things. For the life of me I cannot find any source (academic or otherwise) to understand the difference.

How are they different from one another? Any source that I can look up?

Here the incriminated sentence: "In the course of several conversations, Duncan Bell and I shared exchanges on federalist and federationalist projects".

Source: Seyla Benhabib (2018) Exile, Statelessness and Migration