Processes are always properties of dynamic systems, they are characterized by such system attributes as variables and parameters. Every process model has distinguished input and output variables, it can be autonomous or controlled.
There are numerous taxonomies of processes, roughly speaking, they are divided on: continuous and discrete, stable and not stable, convergent or not convergent, cyclic and not cyclic, linear and not linear, as well as they are grouped according to the name of the domain where they are analyzed.
Some example of physical, technological and biological processes
combustion, crystallization, centrifugation, diffraction, dispersion, distillation, electrolysis, electrophoresis, emulsification, evaporation, hydrolysis, nuclear fission, nuclear fusion, oxidation, phosphorescence, pyrolysis, reduction, reflection, refraction, scattering, sedimentation, sublimation, birth, cell division, fermentation, fertilization, germination, growth, geotropism, heliotropism, hybridization, metamorphosis, photosynthesis, transpiration