unonym

n. A very uncommonly used name for word which have just a
letter difference.
<p>
The origin of this word probably comes from the latin
word-unus which means one and the Greek word onoma (-onym)
which means same. It is still yet unknown in which country
or when this was first used.
<p>
Examples:
<p>
<br>* Clever+a=Cleaver
<br>* Dane+c=Dance
<br>* Sad+n=Sand
<br>* Pin+e=Pine
<br>* Spin+e=Spine
<br>* One+t=Tone
<br>* Pal+e=Pale
<br>* tool+s=stool
<p>
And Most plurals (eg.duck+s=ducks)