According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern -NN-G. That is, five letter words with 2nd letter N and 3rd letter N and 5th letter G. In alphabetical order, they are:
ennog
Ghost Town
one touch
Fred Perry
In fashion
for the first word: Beef
The first word is probably Grateful not enough info for the second word.
one touch
Mont Clare
Juicy Beef
Overnight sojourn
Kid stuff
One possibility is "mixed company".
Preface has seven letters and starts with a p.