cross-linkage vs chemical bond

cross-linkage and chemical bond both are nouns.

Word	Noun	Adjective	Verb	Adverb
cross-linkage	Yes	No	No	No
chemical bond	Yes	No	No	No

As nouns, chemical bond is a hypernym of cross-linkage; that is, chemical bond is a word with a broader meaning than cross-linkage:

cross-linkage: a side bond that links two adjacent chains of atoms in a complex molecule
chemical bond: an electrical force linking atoms

Other hypernyms of cross-linkage include bond.

cross-linkage (noun)	chemical bond (noun)
a side bond that links two adjacent chains of atoms in a complex molecule	an electrical force linking atoms