Directional Bonding: What is the Difference?

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hi, could anyone kind enough to tell me what are directional bonding and non-directional bonding? what are the difference between them?
 
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Bonding between K and Cl is not directional, while bondings between
two atoms of sulphur or two molecules of water are directional, i.e. they
depend on the atom (molecule) orientation...
 
i got it... thanks.
 

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