Can sodium chloride be categorised as a giant molecular structure

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Graphite and diamond are identified as examples of giant molecular structures due to their covalent bonding, which involves a network of atoms held together by strong covalent bonds. In contrast, sodium chloride is excluded from this category because it consists of ionic bonds, which involve the electrostatic attraction between oppositely charged ions rather than covalent bonding. The distinction is crucial, as a molecule is defined as a structure formed by two or more atoms that are covalently bonded, thereby excluding ionic compounds from this classification.
mutineer123
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I was attempting this question where I had to say which, out of graphite, diamond and sodium chloride represent a giant molecular structure? The answer is only the first two. Why is the latter excluded?
 
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What kind of bonds keeps atoms together in each crystal?
 
covalent in first,ionic in last
 
Stemming from that, a molecule is defined as two or more atoms covalently bonded. By definition, ionic bonds are excluded.
 

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