Nouns

(n)abstraction, abstracta concept or idea not associated with any specific instance“he loved her only in the abstract — not in person”
(n)abstractionthe act of withdrawing or removing something
(n)abstraction, generalization, generalisationthe process of formulating general concepts by abstracting common properties of instances
(n)abstractionan abstract painting
(n)abstractedness, abstractionpreoccupation with something to the exclusion of all else
(n)abstraction, abstract entitya general concept formed by extracting common features from specific examples