What are the opposite words for sub-stances?

Substances are essential elements that make up the material universe. They are the building blocks of everything around us. Antonyms for the word "substances" would be the opposite of what makes up those building blocks. These would include words like immaterial, ephemeral, insubstantial or intangible. These words are often used to describe concepts or ideas that cannot be touched, like emotions or thoughts. They are also used to describe things that are not physical, like dreams or nightmares. Antonyms for substances can also be words like vacancy, nothingness, or vacuum. These words describe the absence of anything tangible or existing in a space.

Antonym of the day

most doordie
few, little.