Abstract object
object with no physical referents
level
information
vacuum
reasoning
domain of discourse
fiction
content
plan
Mother Nature
curriculum
thought experiment
modality
concept
state of affairs
indicator
imaginary line
terrain
advertising effects
unit
Zug
mathematical object
Gusty
proposed country
Dasein
regularity
Stoff
Action
biosphere
M-government
mind
Zettabyte Era
abstract concept generator
chain of events
class
environmental data
narrator
complex
paper street
regimen
game item
relation
Spirit