Possible varieties of matter far exceed the ordinary.
If exotic atoms had greater lifetimes
they would seem more ordinary, and more things
would be possible.
Quark, baryon, meson, hadron, gluon, lepton, boson, fermion, photon;
these are categories of physical particles that make up our world.
Since most of us are familiar only with the photon, here is a brief outline:
Maybe someone can think of a way to diagram these differences clearly.
See also in The book of science:
Readings on wikipedia: