[hbartab]

Both are diagrammatic but that's all the overlap there is.

Feynman diagrams are a way to compute Green's functions/propagators for particle scattering amplitudes. IOW they give a pictorial representation of things you need to compute to figure out particle reactions at high energies.

ZX calculus is for "simplifying" quantum circuits. I write this in quotes because the rules are pretty involved. Apart from Quantinuum, few (if any) are pushing for it. Almost no quantum computing papers are published using ZX notation.

Feynman diagrams in particle physics are, however, universal.

You might enjoy this write-up: https://pennylane.ai/qml/demos/tutorial_zx_calculus