oversell

As verbs the difference between oversell and overseal

is that oversell is to agree to sell more of something than one can supply while overseal is to close with a seal at the top.

As a noun overseal is

a seal at the top of something, to close it.

As verbs the difference between oversell and overwell

is that oversell is to agree to sell more of something than one can supply while overwell is to overflow.

As verbs the difference between oversell and overswell

is that oversell is to agree to sell more of something than one can supply while overswell is to swell or rise above; to overflow.

As verbs the difference between oversell and overfell

is that oversell is to agree to sell more of something than one can supply while overfell is (overfall).