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Art Informel is a French term referring to the gestural and improvisational techniques common in abstract painting during the 1940s and 50s. It encompasses various styles that dominated these decades, characterized by informal, spontaneous methods. Artists used this term to describe approaches that moved away from traditional structures and embraced more expressive, unstructured techniques.

Réalités Nouvelles means new realities and refers to an exhibiting society founded in 1939 in Paris by Sonia Delaunay. The Salon des Réalités Nouvelles was dedicated to promoting abstract art, which it considered to be a new reality because it does not imitate the existing physical world. The movement emphasized that abstract art creates its own reality, independent of the external world, and played a significant role in the development and recognition of abstract art in the mid-20th century.

Constructivism is an architectural and artistic philosophy of Russian origin that emerged as a rejection of the idea of autonomous art. The movement advocated for art to serve practical social purposes. Since its inception in 1919, Constructivism has evolved and significantly impacted 20th-century art movements, influencing major trends such as De Stijl and Bauhaus.