IV vs feeding

IV and feeding both are nouns.

Word	Noun	Adjective	Verb	Adverb
IV	Yes	No	No	No
feeding	Yes	No	No	No

As nouns, feeding is a hypernym of IV; that is, feeding is a word with a broader meaning than IV:

Other hypernyms of IV include alimentation.

IV (noun)	feeding (noun)
administration of nutrients through a vein	the act of consuming food
the cardinal number that is the sum of three and one	the act of supplying food and nourishment