Facebook :D well I heard that's the second (maybe)
A word that starts with y and ends with y is yay .
circumnavigate
Sandman (starts with S ends with N - 7 letter word)
An eight letter word that starts with S and ends with T: satiristshortestsmallestsmarteststagnantstalwartstiffeststridentsubtract
A seven letter word that starts with D and ends with T: decrypt
Cash is a 4 letter word that starts with c and ends with h.
Domain is one of the words that starts with the letter D and ends with the letter N.
A four letter word that starts with J and ends with M: jism.
Anole
tofu
Bolivia
Aura