in·stru·men·tal·ism NOUN regarding the approach that an activity such as science

in·stru·men·tal·ism
NOUN
regarding the approach that an activity such as science, law, or education chiefly as an instrument or tool for some practical purpose, rather than in more absolute or ideal terms.
(utility)

nat·u·ral·ism
NOUN
regarding the approach that everything arises from natural properties and causes, and supernatural or spiritual explanations are excluded or discounted.
(change)

re·al·ism
NOUN
regarding the approach that objects, properties and relations the world contains, and collectively, the structure of the world exists independently of our thoughts about it or our perceptions of it.
(referent)