Antonyms for the word "conceptualizations" include actualizations, manifestations, concrete expressions, tangible representations, and materializations. These terms refer to the concrete and tangible aspects of an idea, rather than the abstract and theoretical concepts. Actualizations refer to the realization of an idea or concept in the real world, manifesting as tangible results. Manifestations also refer to the physical representation of an idea, often used in spiritual or supernatural contexts. Concrete expressions refer to the material or physical representation of an idea, while tangible representations refer to the physical form of an idea. Materializations refer to the physical manifestation of an idea or concept, often used in paranormal contexts.