Reism

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Reism or concretism is a philosophical theory Tadeusz Kotarbiński, based on the ontology of Stanislaw Lesniewski, his "calculus of names".

In ontological sense, reism was condensed by Kotarbiński to the two postulates

"every object is a body", i.e., all abstract concepts are be reduced to concrete objects.
no object is a state or relation, or property.

In semantical sense, it is a theory of language which draws a distinction between "real" names, i.e., names associated with bodies and pseudo-names, onomatoids, which denote states, relations, properties, events, etc. It further elaborates on when a sentence is meaningful, when it has a literal, direct sense or when it is meaningful or has an indirect sense.