Hmm, ok, I'll take your word for this as sailing terminology. I learned my knots in the Boy Scouts, and can knock those three off blindfolded, if not necessarily behind my back!
I will reiterate though, that the reef knot is called a square knot where I come from. Misnomer? I guess, that's what everyone calls it, an overhand stop knot is an overhand or just a "knot" actually.