There are 18 words that start with 'poun'.
| pound | pounce | pounds | 
| pounced | pouncer | pounces | 
| poundal | pounded | pounder | 
| pouncers | pouncing | poundage | 
| poundals | pounders | pounding | 
| poundages | poundcake | poundcakes | 
Note: These 18 words that start with 'poun' are found from the USA & Canada version of the tournament Scrabble word list.