Compound Noun

 

A compound noun is like a derivitave. It is two words put together to make one word.

Here are some examples:

 

airplane
blackboard
Iceland
wallpaper
grasshopper
seafood
undercut
without
highlight
underworld
witchcraft
brother-in-law
right-hander
bedroom
motorcycle
rainfall
haircut
train-spotting
hanger-on
passer-by
greenhouse
software
dry cleaning
onlooker
output
over throw
bluebird
breakdown
drive-in
feedback
hold-up
makeup
high school
sister-in-law
walkover

Source: http://wiki.answers.com/Q/List_of_compound_noun