Japanese edit

For pronunciation and definitions of くうさう – see the following entry.
空想くうそう
[noun] [from 1886] fantasy, daydream; something imagined
[noun] [from 600s] (Buddhism) thought that exhibits attachment to sunyata
[verb] [from 1886] to fantasize
[verb] [from 600s] (Buddhism) to think in a way that exhibits attachment to sunyata
(This term, くうさう, is a historical kana spelling of the above term.)