 for an anti-pattern of one danger in abstraction

 for an abstract description of a set of data

 for an abstract description of a computational procedure

 for making a term into a function of a variable

 for structuring data independent of the processes that use it

 for abstractions that hide implementation details

 for an aphorism about an (the?) optimum point in the space of abstractions

 for abstraction where functions produce or consume other functions

 for making a term into a function of some variable

 for the opposite of abstraction in computing