pounder

As nouns the difference between founder and pounder

is that founder is one who founds, establishes, and erects; one who lays a foundation; an author; one from whom something originates; one who endows while pounder is a vessel in which something is pounded, or something used in pounding.

As a verb founder

is of a ship, to fill with water and sink.

As nouns the difference between bounder and pounder

is that bounder is something that bounds or jumps while pounder is a vessel in which something is pounded, or something used in pounding or pounder can be (only in combination) a gun capable of firing a specified weight of shot.