Nouns

(n)abstraction, abstracta concept or idea not associated with any specific instance“he loved her only in the abstract — not in person”
(n)outline, synopsis, abstract, precisa sketchy summary of the main points of an argument or theory

Verbs

(v)abstractconsider a concept without thinking of a specific example; consider abstractly or theoretically
(v)pilfer, cabbage, purloin, pinch, abstract, snarf, swipe, hook, sneak, filch, nobble, liftmake off with belongings of others
(v)abstractconsider apart from a particular case or instance“Let's abstract away from this particular example”
(v)abstractgive an abstract (of)

Adjectives

(a)abstractexisting only in the mind; separated from embodiment“abstract words like ‘truth’ and ‘justice’”
(s)abstract, abstractionist, nonfigurative, nonobjectivenot representing or imitating external reality or the objects of nature“a large abstract painting”
(s)abstractdealing with a subject in the abstract without practical purpose or intention“abstract reasoning”, “abstract science”