supply vs irrigation

supply and irrigation both are nouns.

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

As nouns, irrigation is a hyponym of supply; that is, irrigation is a word with a more specific, narrower meaning than supply:

supply (noun)	irrigation (noun)
the activity of supplying or providing something	supplying dry land with water by means of ditches etc
offering goods and services for sale	(medicine) cleaning a wound or body organ by flushing or washing out with water or a medicated solution
an amount of something available for use

supply (verb)	irrigation (verb)
state or say further
give what is desired or needed, especially support, food or sustenance
give something useful or necessary to
circulate or distribute or equip with