irrigation vs supplying

irrigation and supplying both are nouns.

Word	Noun	Adjective	Verb	Adverb
irrigation	Yes	No	No	No
supplying	Yes	No	No	No

As nouns, supplying is a hypernym of irrigation; that is, supplying is a word with a broader meaning than irrigation:

Other hypernyms of irrigation include provision, supply.

irrigation (noun)	supplying (noun)
supplying dry land with water by means of ditches etc	the activity of supplying or providing something
(medicine) cleaning a wound or body organ by flushing or washing out with water or a medicated solution