victualler vs supplier

victualler and supplier both are nouns.

Word	Noun	Adjective	Verb	Adverb
victualler	Yes	No	No	No
supplier	Yes	No	No	No

As nouns, supplier is a hypernym of victualler; that is, supplier is a word with a broader meaning than victualler:

victualler: a supplier of victuals or supplies to an army
supplier: someone whose business is to supply a particular service or commodity

Other hypernyms of victualler include provider.

victualler (noun)	supplier (noun)
a supplier of victuals or supplies to an army	someone whose business is to supply a particular service or commodity
an innkeeper (especially British)