Words to Describe abstractions

How abstractions often is described ("________ abstractions")

• moral
• empty
• such
• useful
• philosophic
• lifeless
• dead
• scientific
• lofty
• vague
• necessary
• simple
• impersonal
• personified
• shadowy
• analytical
• highest
• cold
• legal
• ethical
• philosophical
• mathematical
• arbitrary
• barren
• higher
• linguistic
• universal
• formal
• theoretical
• appropriate
• ideological
• artificial
• symbolic
• pale
• meaningless
• allegorical
• logical
• geometrical
• grand
• dry
• mere
• key
• remote
• functional
• intellectual
• static
• convenient
• mental
• bloodless
• statistical
• powerful
• fundamental
• conceptual
• unreal
• pure
• geometric
• metaphysical
• academic
• procedural
• concrete
• false
• verbal
• ideal
• complex
• theological
• generalized
• broad
• level