clyster vs irrigation

clyster and irrigation both are nouns.

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

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

clyster: an injection of a liquid through the anus to stimulate evacuation; sometimes used for diagnostic purposes
irrigation: (medicine) cleaning a wound or body organ by flushing or washing out with water or a medicated solution

clyster (noun)	irrigation (noun)
an injection of a liquid through the anus to stimulate evacuation; sometimes used for diagnostic purposes	supplying dry land with water by means of ditches etc
	(medicine) cleaning a wound or body organ by flushing or washing out with water or a medicated solution