Yes, You are "daydreaming" if you are thinking about something inside your head which has nothing to do with what is happening. (:
Yes, "to daydream," but, "a daydream" can also be a noun.
No because you daydream with your eyes open and sleep with your eyes closed
Daydreams is the plural of daydream
Midnight Daydream was created in 1999.
Nuclear Daydream was created in 2005.
Jacky Daydream has 241 pages
Jacky Daydream has 307 pages.
Moonage Daydream was created in 1971-04.
Daydream Nation was created in 1919-07.
daydream is one compound word, so you do not need a hyphen.
Jacky Daydream was created on 2007-03-01.
Daydream Wonder was created on 1994-08-24.