Take the 2-minute tour ×  I see people often use abstract as a
synonym of strange, but what does it actually mean? I've looked
up a definition:   But it makes no sense to me and seems a bit
vague. For example, what does it mean when people say that games
are just sets of abstract rules?  share|improve this question
add comment  3 Answers  When something is "abstract", it means
that it doesn't have a solid existence. I.e., you can't realize
it using any of your senses (sight, hearing, touch, taste,
smell). For example, feelings, like happiness or sadness, are
abstract. When used with art, though, it usually refers to that
kind of art that doesn't describe materialized things, and
abstract pieces of art are occasionally called 'strange' --
that's probably what you were talking about.  share|improve this
answer add comment  The short answer is that abstract is the
opposite of concrete.  The long answer  Abstraction is basically
a synonym for generalization. When we simplify something by
throwing away irrelevant