Kyūjitai form of 変化: change; variation

Kyūjitai form of 変化: to change, to vary

anthropomorphization, personification: transformation of a non-humanoid being into a humanoid, or depiction as such / the humanoid such produced

to anthropomorphize

(mathematics) rationalization (making into a rational expression)

(mathematics) to rationalize

realization

substantiation; materialization

to substantiate; to materialize

making practical or useful; implementation